Vintage Taxco Sterling Silver Modern Wave Ring Size 8 US Total Weight ~ 9 grams Band width ~ 4 - 8mm Markings “ MEXICO” partially worn “ 925” mostly worn “TC-55” The first letter indicates location, and there are few in use, those most commonly seen are: T, M, G & C In this example the T is for Taxco - others are M for Mexico City, G is probably Guadalajara and C most likely Cuernavaca. The second letter indicates the first initial of the last name of the silversmith, in our example it is C. The number indicates that he is the 55th smith, with a name beginning with C, to register a mark in his city's assay office. This example, TC-55, tells us that the item on which it is stamped, was made by a smith with surname initial R sometime after 1979 in the city of “T” Taxco. Generally that is all that can be derived from these marks, Unfortunately, there is no list that matches the letters and numbers to silversmith's names and there are probably less than 15 of these identified. I only have 1 of this item. It is also posted in Womens jewelry. Duplicate listing will be deleted upon sale Handmade Made in Mexico Collectible Investment Wearable Art Legacy Jewelry #953