4 Tangas - Filipe III Goa mint, date reverse

The 4 Tangas was the principal silver denomination of Portuguese Malacca in the early seventeenth century, but the city itself was on borrowed time when these were struck. The Dutch VOC had been pressing hard against Portuguese holdings across the Estado da India for decades, and Malacca fell in January 1641 — just five years after the latest possible date on this coin. Coins minted in this narrow window are among the final silver issues produced under Portuguese authority in the Straits.

The Goa mint attribution is the telling detail. By this period Malacca lacked reliable local minting capacity, and silver coinage for the settlement was produced on the subcontinent and shipped east.