No, I don't think it's foreign, I think it's an overstrike over a coin featuring the Eagle Standard of the Americanus Legion. Very famous with many battle honours particularly in Gaul.
@lordmarcovan after careful research I have come to the conclusion that this is not only 100% genuine, but is also if the highest rarity. I suggest you contact a firm like Lloyds of London to explore your insurance options.
Ahem, I'm sorry to be that one who brings sad news but I find it has a strange look to it (even though one has to be careful at judging from pictures alone, and even more with not seeing the other side of the coin). It reminds me a lot some very common coin they call quarter across the big ocean (struck in enormous quantities) that might have been overstruck to fool tourists or newbies. I would stay away Just my two cents though Q
I think Aethelred has a good point there, thankfully there are some real experts here to assist. Clearly the daggers and the script are in such high profile that they have tarnished with a nice dark patina faster than the rest of the coin. You did not show the obverse which I suspect will probably be an image of Brutus's wife or maybe Fortuna?
I agree with @Cucumbor .... This is proof that Brutus escaped, fled across the ocean not knowing what was on the other side, landed in the US and invented milled coinage. UFOs might also be involved and it is pretty clear from this thread that Elvis is alive and well.
I'm not an expert but I suspect that it has been repatinated. Thank you for your humor Lord Marc! It's what I need! Sometimes I take my hobby and myself too seriously.
Style is not quite right. Unofficial or "barbarian" strike, probably somewhere along the Danube. Or the Mississippi.
Now I hate to be 'that guy' but I think that OP coin is a fake. Honestly, the style is way off and I swear I see casting bubbles. Can we get a picture of the edge?