"I would like to announce the availability of a free ten-page update to my 2015 guidebook to the general issue ten cash coins of the Republic of China.

"My guidebook, "The Ten Cash Commentary: The General Issue Ten Cash Coins of the Republic of China," covers 162 varieties issued from 1912 to 1949, with the 2020 update adding 16 additional varieties (and other new information). That compares to the 49 varieties in the Standard Catalog of World Coins and the 125 varieties in A.M. Tracey Woodward's 1936 guidebook to China's ten cash coins. For example, my guidebook and its update describe through text and photos the six varieties of Y-301, the ten varieties of Y-302, the five varieties of Y-303, and the eighteen varieties of Y-306.2.

"I am happy to email a copy of the 2020 update to anyone upon request. While it would be most useful to someone who already owns a copy of the 2015 edition, other collectors can use it as a preview of the 2015 edition (which is available through a number of booksellers and Amazon).

"All requests for a copy can be sent to this email address, tencashcommentary@gmail.com "