The Atocha Shipwreck 4 Reales coin from the 1600s is a rare and valuable piece of history originating from Bolivia. Made of silver, this cob coin bears the original Mel Fisher 2×2 Flip certification and signed COA from Mel Fisher, adding to its authenticity and appeal to collectors. With its unique piece of history and pirate legend, this coin is sure to be a prized addition to any collection of world coins. Certificate of Authenticity and 2×2 Flip Information.