Tiffany Black Titanium Narrow Ring Tiffany 1837™, engraved with the year Tiffany was founded. It's a collection with a beautifully striking form featuring smooth curves. A ring with a minimalist style that highlights a sophisticated and elegant look. *This item is currently discontinued and is a very rare item. Brand Name: Tiffany & Co. Product Name: Black Titanium Narrow Ring 1837 Japanese Size: Unknown, probably around size 13 *Inner diameter: Approximately 11mm Material: Black Titanium Accessories: None Purchased at a Tiffany's authorized retailer in Japan. Purchased 7-8 years ago, and I've forgotten the size. I think it's probably around size 13-14. While it's not noticeable when worn, there are many small scratches, so please check the images. The third photo shows them clearly.