A gold coin of the Portuguese Indies, struck as early as the middle of the sixteenth century, principally at Goa. Its value originally was fifteen hundred Reis, and there was a corresponding half. The earlier types represent on one side a figure of Saint Thomas standing dividing the date, and on the reverse the armorial shield of Portugal with an inscription.

At the beginning of the reign of John V (1706-1750) there was a readjustment of the monetary system and the Santo Thom? was struck in various sizes, based on the Xeraphin. We find in consequence a San Thom? of two, four, eight, ten, twelve, and fifteen Xeraphins. The design on these coins is usually a cross, the lower bar of which divides the date, and the upper one the figures 12 X, 10 X, etc.

The San Thom? was issued at Goa until the year 1841.