This Mexican coin from 1978 with a denomination of 10 pesos has a unique error that sets it apart from other coins of its kind. A large clip is visible on the edge of the coin, adding to its historical and collector's value. The coin has been circulated and is made of copper-nickel, making it a rare find for collectors of Mexican coins from the period 1905 to now. The coin is uncertified, but its authenticity can be verified by its country of manufacture.