Watch List notes:

THAI KINGDOMS: AR tok chiangmai (66.33g), 47mm, "oyster" tok coinage, 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: 50-75 USD