Watch List notes:

THAI KINGDOMS:LOT of 8 silver tok type coins including AR chiangmai "oyster" tok coinage of 15.44g, 16.56g, 16.77g, 18.90g, 31.29g, and 32.26g, and nan tok types of 67.20g, 61.59g, a nice group of these popular, usual quality examples, retail value $350, lot of 8 items, ex Charles Opitz Collection. The 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: 150-250 USD