10 Dollars - Elizabeth II

Trinidad and Tobago gained full independence in 1962 but retained British coinage conventions for over a decade. The Central Bank, established in 1964, began issuing its own decimal currency series through the early 1970s, with these larger-denomination copper-nickel pieces introduced as the country's oil revenues were beginning their dramatic climb ahead of the 1973 OPEC price shock. The timing placed this coin at the threshold of a period when Trinidad and Tobago would briefly become one of the wealthier nations in the Western Hemisphere on a per-capita basis.

The two-year production window — 1974 and 1975 — was not extended, likely because circulating ten-dollar coins proved impractical at that size and weight.