M exico 8 Reales silver cob. The item "Mexico 8 Reales Silver Cob. 23.7 Grams" is in sale since Sunday, March 11, 2018. This item is in the category "Coins & Paper Money\Coins\ World\North & Central America\Mexico\Colonial (up to 1821)". The seller is "escudo2" and is located in Putnam Valley, New York.This item can be shipped to United States.