This remarkable ring features a sea-salvaged 1/2 reales silver cob coin from the Spanish Empire, recovered from an unknown shipwreck near Callao on the Peruvian coast. Minted in the 1700s, the coin displays the iconic castles and lions in the quarters of a cross, along with the royal monogram of Spain. Set in a 95% pure silver ring, this piece weighs 23.3 grams, has a 20 mm coin diameter, and is size 7 1/2. Authenticity guaranteed, making it a perfect collectible or a distinctive addition to any jewelry collection.