This is an ancient Mexican coin in circulation with a denomination of 5 cents (100 cents = 1 old peso), which was issued in 1973. On the back of the coin is the national emblem of Mexico-an eagle with a snake standing on a cactus growing on a rock in the lake.

This Mexican coin is out of circulation now, so it can't be exchanged. However, it has collection value, and it is currently worth 3 yuan/piece in the coin collection and trading market.