official Mexican silver ring, handcrafted in Taxco, Mexico, starting in or after 1979. Size 11 What the Stamp Means: T Represents Taxco, the legendary silver-smithing city in Guerrero, Mexico where the ring was produced. B: The first letter of the registering silversmith's last name (e.g., Blanco, Barba, Bravo). 1: Indicates this person was the very first artisan with a last name starting with "B" to register under this modern lettering system. A: Designates the specific workshop location or production series block.