Watch List notes:

MALAYSIA: green vulcanite 10 cents (2.41g), SS-P (p. 409), name of company // denomination in Chinese, English and Malay, VF-EF, RRR. The Cowie Harbour Coal Company at Silimpopon in Kalabakan (Borneo) was founded in London in 1905, peaked in the 1920s, then failed and filed for voluntary liquidation in 1937. The vulcanite tokens were produced in 10c, 25c, 50c, and $1 denominations.

Estimate: 120-160 USD