20 Pesos 'A' Foreign Exchange Certificate

Cuba's Foreign Exchange Certificate system ran parallel to the regular peso, designed to capture hard currency from tourists and the diplomatic community while keeping dollar transactions formally off the books. The "A" series — distinguished from the "B" series issued to Cuban nationals receiving remittances — was intended specifically for foreign visitors, who were legally required to exchange hard currency for these certificates upon entry.

Státní Tiskárna Cenin, the Czechoslovak state security printer, produced much of Cuba's banknote output during the socialist period, a relationship rooted in COMECON-era trade arrangements rather than open tender. The FX certificate program was abolished in 1989, replaced eventually by the convertible peso system that itself lasted until 2021.