This Japan #C21 and C23 Airmails stamp set features a plane and Mt Tsuang-dake in magenta color. It was issued in 1951 and 1952, and has a denomination of 80 yen. The stamp set is certified as uncertified and is in F (Fine) grade. It is a great addition to any aviation or Japan stamp collection. The stamp set has been used and is of high quality. The stamp set has an interesting history and is a must-have for stamp collectors.