1 Tanga

The tanga was a Portuguese monetary unit transplanted to their Asian possessions, and Ceylon's issues reflect the chronic administrative disorder of Estado da India during the mid-seventeenth century — a period when Portuguese authority on the island was actively collapsing under sustained Dutch VOC military pressure. The Dutch completed their conquest of the island's coastal territories by 1658, making the window for this issue extraordinarily narrow.

KM#10 is among the final silver coinages struck under Portuguese Ceylon before the VOC assumed control and reorganized the monetary system entirely on Dutch terms.