20 Dollars - Elizabeth II

The Bahamas Monetary Authority was a transitional institution, established after independence negotiations began but before the Commonwealth of the Bahamas achieved full sovereignty in 1973. This 1971 issue predates that independence by two years, placing it in the narrow window when Britain still held constitutional authority but the islands were managing their own currency apparatus. The Authority was dissolved and replaced by the Central Bank of the Bahamas upon independence.

Fr#9 in Friedberg places this squarely in the modern Commonwealth gold issues — a category that attracts date collectors more than type collectors, given the short institutional lifespan of the issuing body.