Not sure why you are being so vague about the coin and only have one side, but assuming it's a French Indochina 1 piastre then the weight is all wrong, so yes, fake. https://www.ngccoin.com/price-guide...e-km-5a.1-1895-1928-cuid-1119310-duid-1269508
This particular fake turns up very regularly at auctions in the UK. I now no longer even bothering to look at them in detail as I will only be wasting my time!
Sorry about that I thought I took pics of both sides but put coin away and noticed when I went to post and ask I only had this pic on my phone. The reason I asked is on the obverse it says 27 GR and with it weighing about the same as a us silver dollar at just over 23 grams I wanted a second opinion on it.
So give it too grandkids and mark suveniour Coin on Flip? Or what else is a person to do with something like this. I do not even know where it came from to tell you the truth. It was in my silver safe, The only thing I can think of is a bag of foreign Coins I bought for grandkids by half pound.
