This was a recent
ebay pickup. Probably paid more than it may actually be worth, but I sometimes splurge on interesting items.
The auction described it as a dove countermark, but I suppose it can be any of a number of birds.
Doesn't really show due to flash, but the tone/patina and surface appearance is consistent between the incuse area and the rest of the coin so I do not believe it to be a modern punch.
Opinions?

