CoinWorldTV 1968, Mexico (United Mexican States). Silver 25 Pesos Coin. Summer Olympics! Mint Year: 1968 Reference: KM-479.1. Mint Place: Mexico City Denomination: 25 Pesos - 1968 Summer Olympics! Material: Silver (.720) 0.5208 ASW Weight: 22.58bgm Diameter: 38mm Obverse: Olympic rings below dancing native left. Legend: JUEGOS DE LA XIX OLIMPIADA MEXICO 1968 Reverse: An eagle with a ...