These are Knot Earrings from Tiffany & Co. Rank B: There are slight scratches and dullness typical of silver due to use, but the item can still be used. Brand name: Tiffany & Co. Model name: Knot Size Height 0.8 cm (0.31 in) x Width 0.8 cm (0.31 in): 6.6 g Accessories None Material 925 N: S: Unused items, exhibited items that we judge to be similar. SA: Clean item with almost no signs of use. A: Item in good condition with little signs of use. AB: Item with some signs of use, dirt, and scratches B: Item with scratches, dirt, or signs of use BC: Item with noticeable signs of use, dirt, or scratches C: Item that is considered junk.