Need Help Identifying Old Coin

[noxer800]

Last night, using my Nox 800 metal detector, I detected this coin in Southern California at a downtown site that was otherwise just yielding post-1958 American coins. It rang up at 25 on my machine, is about the size & weight of a silver quarter & was found about 4" deep in what appeared to be natural dirt. The coin looks very old & had a dull silver appearance when found. But try as I may, I have been unable to find any date or decipher any words on the coin. In searching online, the closest thing I find are Spanish cobs & maravides. But those usually have a Christian cross & a date, which I can find nowhere on this coin.

By searching this site, I found previous threads dealing with Spanish cobs. However, I have been unable to find a thread with photo of a coin like this one.

Would appreciate any help in narrowing down this coin as to age & place of origin. If you need additional information, let me know & I will provide it.

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[Joe-Dirt]

There are a few people on here that might be able to help with the Cobb theory. To me I see the number “711” which might be 1711 on the other hand it also looks like it might be a piece of some other object that broke off. Nice find and good luck!!

 

[noxer800]

Thanks for the feedback, Joe.

 

[ironhorse]

that's a really cool looking coin
measurements would be awesome ..in mm side t side and if you have a scale that weighs to hundredth of a gram would be super ideal lol is it silver?
I can't say I've seen anything exactly like it, sure doesn't remind one of the the Spanish American cobs
it is a crude looking one and probably dates to that period and could have circulated with the early coins
If was a guessing guy...I might say its from India, pre colonial..but that's just a guess
I'll keep an eye on this to see where it goes in the id

 

[Coinboy]

Looks Islamic

 

[unclemac]

it is not a spanish cob and I do not think it is a coin. are you sure it is silver?

 

[ArfieBoy]

To me it looks more like an ancient coin. They were made from some pretty rough planchets. I'm thinking Roman or earlier.

 

[unclemac]

notice how one section has a concave rim.

 

[nkellam22]

Could be siege coinage

 

[WilliamBoyd]

My offhand guess would be a "pirate treasure" imitation coin or a motion picture prop coin.

 

[DCMatt]

it is not a spanish cob and I do not think it is a coin. are you sure it is silver?

I don't think it's a coin, either. It looks more like a bit broken from a larger disk or medallion.

The characters may be Chinese.