Refers to silver with a purity of 92.5%, commonly known as "925 silver"

T & ampCO 1837:

1837 September18, Charles Lewis Tiffany opened Tiffany &; Young's stationery and daily boutique has developed into one of the largest jewelry companies in the world: Tiffany. Each of its designs is engraved with "T &；; CO "and" 1837 "will carry forward the extraordinary design of the brand.