Chopmark Articles & Publications

Online forum with frequent updates and collector engagement
Reddit: r/Chopmarkedcoins

Article on foreign silver in China and shroff handbooks
"Journal of East Asian Numismatics: Organized Chaos － Chopmarks on Foreign Coins"

General overview of chopmarked coins
"Journal of East Asian Numismatics: Chopmarked Coins – China’s Most Underappreciated Numismatic Field"

Brief intro to collecting chopmarked coins (10/2024)
"PCGS: Collecting Chinese Chop-Marked Coins"

Excellent article on the Canton Trade in China
"Chinese Export Silver: The China Trade - Relative to the Silver Trade"

The difference between chopmarks, countermarks, and counterstamps
"Sedwick Blog: Chop Chop: Quick Guide to Chopmarks, Countermarks and Counterstamps"

Brief intro to collecting chopmarked U.S. Trade Dollars (1/2025)
"Greysheet: An Introduction to Chopmarked Trade Dollars"

Article on Capped Bust Half Dollars with chopmarks (1/2026)
"Greysheet: No Dollars? Capped Bust Half Dollars in the China Trade"

Article on the 1870-S half dollar, also discusses chopmarks on US halves (3/2026)
"Greysheet: A Rare Coin that has No Business Being Rare"