I wish I could snap my fingers and examine the coin in-hand. It looks very interesting! I still have doubts about its nature, not that I'm a fouree expert or any kind of coin expert. It's just that I haven't seen this specific surface and interior appearance on a fourree before.
I wish that my photography skills were better! I've never dealt with fourees before, so I could be wrong. But to me it does look like just an outer cladding of silver. Does the Nomos coin still look like a reverse die match?
Looks like it to me. You mean silver? ... If they are of the same die, and if the Obolos coin is not a fourree (and there's not reason to think that it is), and if your coin is a fourree, I guess the reverse die was stolen or used surreptitiously by a forger? I'm itching to know for sure the composition of your coin
The Nomos coin is also a fouree. See the flaking on the obverse (which doesn't seem to match mine). They identify it as 'Subaeratus,' which I think is German/Latin for fouree.
OOOOHHHhhhh... of course you're right, and on the obverse you can clearly see that the Obolos is a fourree . That negates pretty much everything I've said!
There is another possibility when this scenario presents itself: transfer dies. There are examples known of both solid and plated coins seemingly coming from the same dies as opposed to the plated coin being cast. What gives? Transfer dies. Looking closely, generally the plated coins will be in somewhat less relief and may show signs of casting(part of the transfer die creation process). In fact, a hoard containing such transfer dies made from official Republican coins has been documented in Eastern Europe but I don't have the paper at hand. In the absence of that, here's a coin that comes to mind which shows evidence of being made with transfer dies. Look at the reverse: you can see evidence of the impressions made by the serrations of the host coin at 2-3 o'clock. I have not examined this coin in-hand but I believe it to be likely authentic in the sense that it is ancient, but certainly not an official product of the Rome mint.
