Watch List notes:

COINS, 錢幣, INDIA – PORTUGUESE INDIA, 印度 - 葡屬, Colombo: Silver Tanga, Malacca, 1631, Obv countermarked , C above for Colombo (cf Sch 1279; Gomes 11.01). Coin very fine, countermark crisp but double struck.
Portuguese Indian coins countermarked by the Dutch East India Company (VOC) for use in their colonies in Ceylon

Estimate: US$200-250