This coin is a 1715 Fleet Shipwreck Silver 2 Reales with a Certificate of Authenticity (C.O.A.) the concreation has been carefully opened to reveal parts of the coin inside, and left in a "pre conservation with encrustacean state". an excedingly rare specimen when it comes to coins from these wrecks. Giving provinance, and a unique example of how these coins look when they are recovered from the sea floor. It was minted in Mexico sometime prior to the sailing of the famed 1715 fleet. and has been certified as an authentic Spanish colonial shipwreck treasure from the 1715 fleet wrecks by Queens jewels LLC. I have not removed the encrustation entirely intentionally, it is up to the buyer if they would like to remove it or not. Find something great with a true example of what it's like to remove centuries old encrustation and reveal real treasure! This coins is of recent find. From the 2024 treasure salvage season. BONUS ITEM INCLUDED, I WANT YOU TO FIND TREASURE! CLOSER TO BUY IT NOW PRICE THE GREATER THE BONUS ITEMS! I am the salvor of these coins and an individual contractor of the Queens jewels LLC. any questions I am happy to answer thank you for your interest and time.