These are incredibly cool mahjong tiles featuring a design of "a soaring bird" for the "I-sou" (one of bamboo). The tile size is 25.5 x 18.5 x 15.5 mm. These are old mahjong tiles, but there are no noticeable scratches on them (no cracks or breaks at all). Although they are several decades old, I believe these mahjong tiles are in beautiful condition. The backs of the tiles are also in a beautiful state as shown in the photos, and the overall condition is very good. The "bamboo pattern design" of the Souzu (bamboo suit) and the "soaring bird of I-sou" are simply amazing. Mahjong tiles with this design and black backs are rarely seen in circulation, making them quite rare.