This 1980 Mexico Silver Onza Casa de Moneda is an exceptional addition to any coin collection. The coin is made of 0.925 fineness silver and is uncirculated, making it a rare find among collectors. The KM Number of this coin is KM#M49b2 and it was manufactured in Mexico during the historical period of Mexico (1905-Now). The coin is ungraded and uncertified, but still holds its value as a unique and beautiful piece of history. Add this coin to your collection today.