This is the collaboration luxury mahjong set "Touhou Mahjong Pai Kyokuto" with Ichikawaya. All tiles feature wonderful character designs, and you'll be amazed by the incredible craftsmanship even when looking at the details. The tile size is 26 x 19.5 x 16.4mm. It's in a brand new, unused condition & still shrink-wrapped, having been stored for collection purposes, so it's in perfect condition, just as it was when sold. The cobalt blue tile backs are beautiful and super cute! It's unlikely that a set with blue tile backs in brand new, unused condition will appear again. ※ The last 6 photos are images of what it looks like when opened. ※ There is a smell of tobacco. ★Notable Points★ This is the blue-backed version, which was sold as a "100-set limited edition" at Comic Market 74 in the summer of 2008. It seems that it was also sold in limited quantities through mail order and at Ichikawaya, but it quickly sold out and is a rare item. It's a dead stock mahjong set that is no longer sold.