Watch List notes:

COINS, 錢幣, INDIA – PORTUGUESE INDIA, 印度 - 葡屬, Colombo: Silver Tanga, Ceylon, 1640, Obv countermarked , C above for Colombo (cf Sch 1282; Gomes 15.01). Five test cuts in edge, coin and countermark very fine.
Portuguese Indian coins countermarked by the Dutch East India Company (VOC) for use in their colonies in Ceylon

Estimate: US$200-250