Semans, Scott, Daniel K.E. Ching Sale, Auction Catalog, June 2, 1991 lisitng 1375 lots of cast, struck, banknotes, charms, exonumia, Japan, other Asia, quality format auction with about 40% of lots illustrated. Informative mini-articles by Bruce Smith with information unpublished in Western references. Census figures for modern coins.
Estimate: 20-30 USD