Watch List notes:

THAI KINGDOMS: AR tok chiangmai (15.48g), Opitz-pg. 354, Krisadaolarn/Mihailovs-pg. 65, Krisadaolarn/Mihailovs-pp. 66-67, Plates B02-B05, Opitz-pg. 354Plate B01, silver Chiangmai "Oyster" Tok coinage cast in the 17th-18th centuries by the Lanna Kingdom, VF, ex Charles Opitz Collection. Chiang Mai Tok was usually found with a blackened top while the underside was yellowish brown caused by the chemical reaction of the silver alloy supposedly by mixing with egg yolk or chicken blood during the casting process.

Estimate: 60-80 USD