Rarest coin on Numista

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What are some of the rarest coins, tokens and medals on Numista that you've seen?

Personally it's this gold medal from France 1878, I'm the only owner (in the whole world from what I've researched...)

https://en.numista.com/catalogue/pieces74702.html
RARITY: 97
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
Are you sure it's gold ? B.
"Celui qui combat des monstres doit prendre garde à ne pas devenir monstre lui-même. Si tu contemples longtemps un abîme, l’abîme aussi regarde en toi." N.


Ex-référent/modérateur/administrateur à la retraite
Well, the only other example ever of this coin (and not from Puteaux, a different region!) was bought on ebay for 300 dollars. Unless that person was conned!
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
I considered brass, but it seems far far too heavy for that.
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
Gold doesn't get a patina.
Could get worn though, it is 140 years old and not been taken care of well.
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
How could we determine it? How about if I post the weight?
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
http://www.comptoir-des-monnaies.com/product_info.php/republique-francaise-medaille-concours-de-vannesmalakoff-p-63072

This is the same date but from a different region of France (Britanny). It's silver and 150€, and the (Gold??) version I saw on ebay was from AGAIN a different region but 300€.

I have contacted comptoir des monnaies about adding this silver medal to our database, by the way.
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
I would seriously doubt that anything with "Souvenir" printed on it would be gold.  From the pictures it looks to be a base metal that has been plated and the plating is starting to wear off.  For your peace of mind you could try the density test from the numisdoc section "tips and tricks"

https://en.numista.com/numisdoc/measure-a-coin-s-density-27.html
Sounds like an enormous no-no to put a coin under water?
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
Well if we follow p=m/v

Volume of a cylinder (coin): v = h * pi * r²

V= thickness x pi x radius squared
V= 3mm x pi x 250mm x 250mm
V= 589048mm cubed

I'm stuck after that. Damn maths.
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
But to find the mass of the Coin I need the density, so it's a vicious circle...
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
Why?  If you dry it off straight away then it's not going to affect any coin unless it's made of potassium  ;)

I clean all my coins in soap and water and then rubbing alcohol and none of them have melted yet.
Right, let's do a little experiment.

If it's gold, the density will be 19.3, and we'll put it at 9 (around Zinc, Iron, Nickel and Copper) in another test.

p=m/v
19.3=x/589048^3
x = 589048mm^3 divided by 19.3
x= Some absurdly long number it didn't even fully show.

I don't think that's it for some reason.
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
Urgh, after trials and tribulations I won't post, it comes around 8.3 density if I'm not mistaken. There's a good chance it's Iron or Copper then! Maybe some gold plating if I'm extremly lucky, if not it's just totally non gold.

Thanks! I'll update the numista page. Still rare though!
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
That density figure is only for the water experiment.
Oh, I see. Guess I'll just do that then, it'll be simpler.

https://sites.google.com/site/chempendix/densities-of-pure-metals

Still seems to be universal densities though.
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
Sorry this went off topic and became a numismatic question or even coin ID.
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
I have a lot of "Only owner" coins in Mexico and very few in other countries; and also a lot of "Only 2 have it" which a lot are from a ghost user  :~
Numista referee for the "Viceroyalty of the New Spain" (most of it).
History through coins.
Eli V
That's fine, it's interesting.

The rarest coin in terms of Numista ownership is always going to be one that's just been entered.  I've had several 97 rarity coins because I've been the one to put it in the catalogue.
True, but I've also been doing extensive research on this medallion and have found none other EXACTLY like it.
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
The rarest romanian coin is the 20 lei 1868, only given to a few kings and it is said some are buried under the Peles Castle.
https://en.numista.com/catalogue/pieces49139.html
Quote: SRoweCollectionBut to find the mass of the Coin I need the density, so it's a vicious circle...
Couldn't you have simply .. you know ... weighed the coin with a kitchen scale?   :.   
Also the next time you try the mathematic approach you should use cm^3 from the start, makes things a bit easier because the density is defined as g/cm^3  :°

on the topic: The rarest East German coin is a unique golden 20 Mark coin commemorating the 150th birthday of Karl Marx and was specialy made for the Council of State Walter Ulbricht.
It is today in the German Historical Museum in Berlin.
Doesn't mean there aren't plenty out there.  Again, I doubt anything with "Souvenir" on it was a one-off production.
Quote: neilithicDoesn't mean there aren't plenty out there.  Again, I doubt anything with "Souvenir" on it was a one-off production.
Yup it is like selling an old picture but keeping the negatives at hand to make more (or the Memory stick for kids).
Numista referee for the "Viceroyalty of the New Spain" (most of it).
History through coins.
Eli V
I supplied the images for this one, it is my own coin pictured, I did add an image of the rim view but it was rejected, which I am not surprised at because I made several errors adding the info.

Numista Rarity index: 97
https://en.numista.com/catalogue/pieces73396.html

doesn't go higher than 97 unless no one has it.
Restoration addict : Verdigris Removal : Zinc White spot removal : Iron Rust Removal : Silver brooch/necklace mount Removal
https://en.numista.com/catalogue/pieces69893.html

I am still the only owner of this coin I added to the catalog in March.
I did this one, rarity still 97

https://en.numista.com/catalogue/pieces71795.html

and this one, rarity 97

https://en.numista.com/catalogue/pieces74032.html

and this one

https://en.numista.com/catalogue/pieces71716.html

and this one

https://en.numista.com/catalogue/pieces72749.html

and this one

https://en.numista.com/catalogue/pieces72608.html


etc etc etc
British India rarity index 100

https://en.numista.com/catalogue/pieces25930.html
Let's Do A Swap To Know Each Other Culture.
I have this one and it's a 97

https://en.numista.com/catalogue/pieces74443.html
The rarest I nearly had was a British west Africa 6d. I was sniped at the last minute. Only 167 escaped the melting pot ! I will get one one day !
This one, I created the page the 2014-09-10

https://en.numista.com/catalogue/pieces64695.html
"Celui qui combat des monstres doit prendre garde à ne pas devenir monstre lui-même. Si tu contemples longtemps un abîme, l’abîme aussi regarde en toi." N.


Ex-référent/modérateur/administrateur à la retraite
Do you own one?
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
Quote: FlukeI supplied the images for this one, it is my own coin pictured, I did add an image of the rim view but it was rejected, which I am not surprised at because I made several errors adding the info.

Numista Rarity index: 97
https://en.numista.com/catalogue/pieces73396.html

doesn't go higher than 97 unless no one has it.
https://en.numista.com/catalogue/pieces18013.html
It was already here, and i had it and swapped it.
Quote: cncote10I have this one and it's a 97

https://en.numista.com/catalogue/pieces74443.html
It would be very nice if you add the pictures to the catalog.
Quote: kommodore
Quote: FlukeI supplied the images for this one, it is my own coin pictured, I did add an image of the rim view but it was rejected, which I am not surprised at because I made several errors adding the info.

Numista Rarity index: 97
https://en.numista.com/catalogue/pieces73396.html

doesn't go higher than 97 unless no one has it.
https://en.numista.com/catalogue/pieces18013.html
It was already here, and i had it and swapped it.
Bit odd it is there twice then, I only supplied images, the page was already created.
Restoration addict : Verdigris Removal : Zinc White spot removal : Iron Rust Removal : Silver brooch/necklace mount Removal
Quote: cncote10I have this one and it's a 97

https://en.numista.com/catalogue/pieces74443.html
You already told us that 4 hours ago. All we need now is the pictures of your coin on the coinpage.
Quote: Essor Prof
Quote: cncote10I have this one and it's a 97

https://en.numista.com/catalogue/pieces74443.html
You already told us that 4 hours ago. All we need now is the pictures of your coin on the coinpage.
1. It was a glitch in my phone that auto sent the same post for no good reason
2. I already submitted the pictures and I am waiting for their approval.

Thanks though
Quote: cncote102. I already submitted the pictures and I am waiting for their approval.
Thanks for your work! we always need to work on the catalog. I hope someone replaces most of my photos, I am not a great photographer.
Taking a break from swapping for a while, but still interested in pre 1799 Spanish coins, I will make time for that!

Looking for pre 1783 coins
I have been trying to upload in the catalog for a while the 1/2 pound (Gold) from syria  KM 84 which I have in my collection but the lack of info (I dont have the world catalog with me) is keeping me away from completing all the info.

Next week I will be able to complete this task...





So this coin so far is very rare... and then it will be 97!  :°
JustforFun...
Quote: SRoweCollectionhttps://en.numista.com/catalogue/pieces74702.html
RARITY: 97
How did this page even get validated? Lol
Quote: jimpop
Quote: SRoweCollectionhttps://en.numista.com/catalogue/pieces74702.html
RARITY: 97
How did this page even get validated? Lol
?
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
I think he means that there's not a great deal of information on the page, and what is there is incorrect.

There's no dimension or weight details.
It's not gold, it a plated base metal.
The year appears to be incorrect, there's 2 dates listed, looks like a modern commemorative medal, rather than anything "minted" in the 1800's
Doesn't look like a token, as it seems to have a broken "loop", so a medal.
etc.

Sometimes it's so difficult to get submissions validated and approved, so when something like this gets approved, it makes people question why.
http://www.facebook.com/NumismaticsUK
I'm not an expert in any kind of coins, but I reckon I'm good at research and will do my best to help. Feel free to tell me my identifications/valuations/gradings are wrong. It's the only way I'll learn.
It's Brass apparently. The other info is pending right now (no one has validated it yet)
It is from 1878.
It's marked down as a token - medal.
"In my opinion, sir, any officer who goes into action without his sword is improperly dressed"
-Jack Churchill, on his assault of a Nazi german camp riding a motorcycle with his bow and arrows, scottish claymore and bagpipes
Almost impossible to call one coin the rarest. a rarity index of 97 doesn't mean much, I have plenty of 97 indexed coins on Numista.
But I have only one coin listed as Rare in the World Coin Catalogue, with no listed value.
https://en.numista.com/catalogue/pieces68782.html

http://www.ngccoin.com/price-guide/world/german-states-saxe-old-gotha-2-thaler-km-114-1627-cuid-95835-duid-253928
If you like coins, medals and tokens with ship motives follow my new instagram account with regular updates @numisnautiker
From time to time I sell some coins on Ebay make sure to follow me @apuking on Ebay.
Quote: apukingAlmost impossible to call one coin the rarest. a rarity index of 97 doesn't mean much, I have plenty of 97 indexed coins on Numista.
But I have only one coin listed as Rare in the World Coin Catalogue, with no listed value.
https://en.numista.com/catalogue/pieces68782.html

http://www.ngccoin.com/price-guide/world/german-states-saxe-old-gotha-2-thaler-km-114-1627-cuid-95835-duid-253928
That's just so cool man!

 Here is my rare coin, but after checking, it's not so rare anymore others have added theirs, I wish they would add a better photo because the coin shown is mine and very poor. https://en.numista.com/catalogue/pieces19958.html
Taking a break from swapping for a while, but still interested in pre 1799 Spanish coins, I will make time for that!

Looking for pre 1783 coins
It seems like the Numista rarity index doesn't mean a whole lot.  In the short time I've been doing this, I've seen coins that had 100,000,000 minted that still have a rarity index in the 20s, and coins that only had 1,000,000 minted that have a rarity index in the teens.  Just because not many Numista members have it doesn't necessarily mean not many people in the world have it.  Either way, I'd still love to have a coin that pushed up over a 70 or 80 on the rarity index.
Yes we've had this discussion before, the numista rarity rating is pretty much worthless except on this site.  It's useful for seeing what coins other members will likely need if you're going to be swapping, but other than that it's a pretty worthless system, which unfortunately people have started quoting in online auctions.
Quote: BizzoDoesI think he means that there's not a great deal of information on the page, and what is there is incorrect.

There's no dimension or weight details.
It's not gold, it a plated base metal.
The year appears to be incorrect, there's 2 dates listed, looks like a modern commemorative medal, rather than anything "minted" in the 1800's
Doesn't look like a token, as it seems to have a broken "loop", so a medal.
etc.

Sometimes it's so difficult to get submissions validated and approved, so when something like this gets approved, it makes people question why.
Thank you, eactly what I meant!
The Numista Rarity Index is a bit of harmless fun. Without it we wouldn't even be having this conversation. It has no bearing whatsoever on a coin's value or it's scarcity. It's like the countries map, having coins from 300 countries gives you major bragging rights within our own little community but it has nothing to do with the quality of your collection.

People get a good feeling from reaching milestones and these are great ways to share your achievements with friends.  Both are great ideas and I'd like to see more of these type of features even though I don't use them myself.

I'd really like to see some kind of disclaimer on the Numista Rarity Index page to put a stop to people using it to inflate the cost of eBay auctions and such. I don't like to see it being used in that way.

What really does annoy me is the "rare" designation in the comments field of coins with mintages in the millions. "Rare" is the most overused word in Numismatics and the most misused. This really needs cleaning up (hint to referees) as it makes Numista look like a laughing stock. A coin with a mintage of 75,000 isn't "ultra rare" or even "rare"... it's scarce.

It's particularly cruel to young or new collectors who come to Numista to catalog their collection and are overjoyed to find they have several "rare" coins. Imagine how crushing it must be when they realize their rare coin is worth no more than the others in the series.

Numista should be about educating collectors not reinforcing the bad habits of coin hyperbole.

 
Non illegitimis carborundum est.  Excellent advice for all coins.
Make Numismatics Great Again!  
I think a "desirability index" might be more fun: the percentage of owners of a coin who are willing to exchange it.
Quote: pnightingaleIt's like the countries map, having coins from 300 countries gives you major bragging rights within our own little community but it has nothing to do with the quality of your collection.
I agree 100%.  My collection is actually kind of sad value wise, but I'm up to at least 81 countries so far.  Giving people something to strive for is what keeps a hobby alive.  If you have nothing left to achieve, you might start to lose interest.

SRoweCollectionWell, the only other example ever of this coin (and not from Puteaux, a different region!) was bought on ebay for 300 dollars. Unless that person was conned!

If it was gold, then it'd be worth a lot on melt value itself. 60 grams is over 3k!

Rishi Sanjeev

This is a brainless discussion, the rarest coin in the world, is the coin going to be struck for the first time tomorrow!

Globetrotter
Coin varieties in French:
https://monnaiesetvarietes.numista.com

Sjoelund

This is a brainless discussion, the rarest coin in the world, is the coin going to be struck for the first time tomorrow!

I agree which is why this discussion was over 8 years ago.

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