1/4 oz. Pure Silver Bullion 999 with Aztec Calendar design. 1/4 oz. Silver Round Aztec Calendar .999 Fine This design is considered one of the most detailed and intricate in the world of silver bullion, produced by Golden State Mint. Obverse Design: Features Emperor Cuauhtémoc, the last ruler of the Aztec Empire, whose name in Nahuatl means "Descending Eagle." He is depicted wearing a traditional headdress adorned with feathers and royal jewelry. Reverse Design: The Aztec Calendar, featuring intricate engravings of the ancient Sun Stone, currently displayed at the National Museum of Anthropology in Mexico City. The design is centered around the face of the sun god "Tonatiuh," surrounded by complex geometric rings symbolizing the 20 days of the Aztec month and ancient astronomical phases. Specifications:- Composition: 999 Fine Silver (99.9%) Weight: 1/4 troy ounce (0.25 troy oz) Diameter: 26.57 mm Thickness: 1.5 mm Mint: Golden State Mint Quantity: 20 pieces (each piece is 1/4 ounce)