I received a few coins from Mexico, one is a 50 cent piece, the date however, says 1888. This time of coin wasn't produced in 1888, but it was in 1998. I found a guy online saying it's a common thing, and then someone selling their coin on
ebay for 9k pesos. Not really interested in selling, but if it's a rare coin I'd like to take more care of it than just throw it in a pile.

