- Brand Name Tiffany & Co Tiffany & Co - Model Name Open Atlas Necklace - Size (cm) Top height: 1 Top width: 0.5 Length: 42 Width: No. Of issues: Minimum Other Sizes: - Accessories None - Material About the condition (rank)** N: S: Unused items. Items on display. And items that we judge to be similar. SA: Clean item with little or no signs of use A: Item in good condition with little use AB: Item with some use. marks. Or scratches B: Item with scratches. Stains. And signs of use BC: Item with noticeable use. marks. Or scratches C: Item with a difficulty that is said to be junk