1621, Mexico, Philip III. Spanish Colonial Silver 8 Reales Cob Coin. Assayer D! Reference: KM-44.3. R! Mint Place: Mexico City Mint Period: 1618-1621 Denomination: Cob of 8 Reales Ruler: Philip III (Felipe III) of Spain. Diameter: 41mm Material: Silver Weight: 27.5gm Obverse: Cross of Jerusalem with lions and castles in quarters. Typical cross-style of the Mexico mint. Reverse: C ...