B930.  Higo Kinkoroku: Zen by Nagaya.  1960.  Sewn softbound, 7 ¼ x 10 ¼”, about 100 pages in Japanese.  I think this is a reprint of an even earlier book on Higo koshirae.  Many illustrations and extensive text: looks to be a great reference for those with an interest in Higo mounts.

Condition is excellent.  9 ounces.  $100