1869 Mexican Real-Zs CM? [solved]

N#24789
 

I can't find this combination of mint and initials anywhere. The only place I really find CM is 1840 Durango mint. I see no reason to fake such a coin. It's well worn so contemporary counterfeit is possible. Or are all the combinations not necessarily documented? I only have about 3 dozen Real coins but never have found a combination that wasn't documented, leading me to think it somehow isn't real. 
 

I'm no expert on these coins, but it looks fine to me. Like you say, I don't think it's really a coin someone would fake. The best way to check is by weighing it. As for varieties, there are very many. It might be worth checking through either coinfoxa for previous sales of them or even ucoin.net.

@adanieluy and @Jasanche might be able to help you better :)

Hello Friend:

I am not specialist on Mexican coins, just cooperate with jasanche, that may know better than me. Also, since my native lenguaje is Spanish, for sure he would be more clear on explanation.

Anyways, I made a search on catalogs, seem 1869 was the last year produced of this type of coin.

On Krause Mexican coins only catalog, there is only 1 coin for this date, and assayer was “YH” 

On all minthouses of México, only “CM” was Clemente Moron, at Durango from 1848 to 1876, so year matches, but not the mint/assayer.

I think if it would be an assayer using CM initials at Zacatecas, there should be at least one coin with those initials at the mint, but nothing appears.

Now, I suggest you to check metal, there are some tests to confirm is it is silver, and the correct fineness; also check size and specially weight; a small lighter weight may be acceptable due to wear.

Now, I should inspect directly the coin to give my opinion if it is counterfeit or original, but on pictures I notice a few details:

First, of course is the mismatch of mint/assayer, then it call my attention the wear is too straight. I mean, a worn coin usually shows different grades of wear in different zones of the coin, but this one seems to be all with same wear on all surface. On other hand, the edges of raised design looks very right-angled. The wearing usually produces a rounded edge on the raised design, something like “∩”, but this seems to be too “squared”, like “┌┐”. This shape is only produced when in contact to a flat surface, but edge looks too rounded. I don't find it coherent. Finally, maybe is just the picture, but I can't see scratches or bumps on the surface, that should be very common on a so worn coin.

In resume, sad to say, I have serious doubts this be an original coin.

Thank you adanieluy for you thoughts.  As we expected, it is not a real coin.  I confirmed today there is no silver in it at all.  Whether it's been faked or was a contemporary counterfeit, I couldn't say for sure, but ultimately isn't important.  The people at my local coinshop were a little embarrassed no one checked it beforehand.  

I think it's still a very interesting piece, a very unusual coin to counterfeit; perhaps it is worth adding a page for it under exonumia? 

Nice Cap and Ray Contemporary Circulating Counterfeit. Mercuric Silvering over a brass, bronze or brass/bronze alloy. Unquestionably of the period.