Jacobs, Norman & Vermeule, Cornelius C., Japanese Coinage, New York, New York, USA, 1953, 142 pages, hardcover with dustjacket, Part I: A Monetary History of Japan and Part II: A Catalogue of the Coins of Japan, Modern Korea, and Manchukuo. This is the first comprehensive book on Japanese coinage ever published in English. The authors were Lieutenants in the US Military stationed in Japan during occupation from 1945 to 1952.
Estimate: 20-30 USD