Possibly counterfeit Cromwell shilling

I've just bought a long term goal of mine, that being an Oliver Cromwell shilling. Unfortunately, I have some doubts about it. I'll start with the weight. It's 4.84g, which is quite below the 6g that it should be.

Here are some images of the coin I bought.

I've noticed some detail problems on the lettering and other places. Filled in letters and features:

Also, the edge doesn't have any reeding, and has an odd notch. 

Here is an image of a coin I found doing an image search that is 5.72g.

Notice that it doesn't have any filled in letters.

Here is an image of one that is 4.5g in poorer condition.

Notice that this one does have some filled in letters.

I'm very curious as to the opinions of the community about this coin. Thank you in advance.

Can I ask how much did you pay for it ?? To me it looks like a copy possibly a Dutch copy 

559.25USD. Fortunately, it's still within the return window. I posted this on another couple forums and so far it's looking to not be genuine. Quite a disappointment! 

The notch could be from someone testing if its silver or from having had a loop or jewelry mount at some time.

if its a jewelry mount I would tend to it not being a fake.

never seen a fake coin with a jewelry mount.

altough still probable if it was a co temporary.

as for the lettering I do not see anything that I find stange for a coin with so much wear.

Other examples in advanced state of wear:

https://www.acsearch.info/search.html?id=9482115

https://www.acsearch.info/search.html?id=6681292

https://www.acsearch.info/search.html?id=5472957

https://www.acsearch.info/search.html?id=5192937

I do not like the look of the filled in parts of letters and generally how thick the letters look (especially reverse), but maybe a more worn reverse die was paired with a better obverse one?  There are some things about it that I expect a counterfeit would get wrong (like how the A in PAX rides a bit high). 

And the weight is very low, but I have found one other on a light planchet (unless it is a mistake in the listing … always a possibility): https://www.acsearch.info/search.html?id=10732831

Thank you tdziemia. Comparing other worn examples from your links makes me more confident that this is not genuine. The obverse is better than the reverse, but the lettering is still fatter and more rounded than the genuine ones. Look at the “&” symbol for example. As for how it was made; I expect it was by using a genuine coin to make a mold. There are even some die marks from the genuine coin, you can see them above Cromwell's forehead. 

As for weight varietion; the Commonwealth coins never passed the Trial of the Pyx. So perhaps there is more weight variation that during other periods. 

The Dutch copy is listed in some catalogues, along with photos to identify it to distinguish it from the original one struck at the mint in London.

Aidan.

Hello Aidan,

I found an image of a Dutch copy shilling, which is interesting, as I had only read about the Dutch copy crown before. It doesn't match the one I bought though. I believe the one I have is cast from a genuine one, since there are even some die issues that are on my one. The letters being too fat and some details missing seem to be the main indications that it is not genuine. Along with the weight.

Here is the image of the Dutch copy shilling:

Here's a link depicting a REAL Oliver Cromwell 1 Shilling;

https://pw-coins.com/the-commonwealth/ .

Aidan.

Generally I have found coins in Fine condition have lost 2% of their weight, Good coins 5% and very fair coins (Disks) about 10 - 15%.

A weight of 4.84 grams is too light, its 19.33% underweight and given its a milled coin, can't be clipped.

Your coin in Good condition should weigh around 5.70 grams at least, hence it must be a fake or copy.

A rare CCC. Never seen a Cromwell shilling. Yes the underweight situation confirms it. However it could bring $100 U.S. Rare - CCC. First I have seen.