Nintendo's "Yakuman Blue" Mahjong tiles. These are old mahjong tiles that are no longer sold, but they are from my collection, so they are in excellent condition. The pop-art design of the sou tiles, the dynamic brushstrokes of the man tiles, and the overall design of these mahjong tiles are all beautiful and never get old. What's particularly noteworthy is the blue color of the tile backs. The color is a dark blue, almost black, and it has a "calm, mature coolness" that is also excellent. These are mahjong tiles that you don't see very often these days. It's also rare to find them in this condition. I hope a collector will purchase them.