Width 140 mm.
Reverse of the base
帝國飛行協會 - Imperial Japan Aviation Association
Marked with Funahashi workshop mark https://asiamedals.info/threads/badges-and-watch-fobs-manufactured-by-funahashi-funabashi-medal-co-medaru.25352/.
Paperweight was designed to spin.
funahashi medal co.
imperial japan aviation association
imperial japan aviation association item
imperial japan aviation association paperweight
帝国飛行協会文鎮
帝国飛行協会章
船橋メダル製作所