Thank you for your interest. This item is a set of mahjong tiles from Tokyo Mahjong, featuring high-quality bamboo tiles with bamboo backs. The backs of the tiles are made of bamboo. Although the backs are bamboo, they have a smooth texture. The tiles themselves do not have any particularly large scratches or stains, and the overall condition appears to be good. However, there is discoloration and tearing on the sponge sheet used to protect the tiles (see photo 4), and rust on the metal parts of the case due to aging (see photo 7). Please confirm these details. Tile size: Length: 2.6 cm Width: 1.8 cm Thickness: 1.2 cm *Please excuse any errors of a few millimeters. These are vintage mahjong tiles that my family used a long time ago, so there may be some minor imperfections or unnoticed dirt. Please understand this. Please check the photos and only purchase if you understand that this is a used item stored at home. Delivery will be via Mercari shipping. Please refrain from purchasing if you are concerned about minor details. Thank you very much. Dice: 4 Mahjong supplies: Mahjong tiles