1 Peso 'D' Foreign Exchange Certificate-Round 'D'

Cuba's Foreign Exchange Certificates were a parallel currency system introduced to capture hard currency from tourists and foreign workers while keeping it out of the regular peso economy. The series used letter suffixes — A, B, C, D — to distinguish which category of foreigner could legally hold and spend them, a bureaucratic segregation that reflected the regime's obsession with controlling exactly where convertible funds flowed.

The round "D" overprint on this note designated use specifically at diplomatic shops and facilities, the narrowest circulation category in the series. Státní Tiskárna Cenin in Prague printed the base notes — a natural choice given Cuba's deep economic ties with Czechoslovakia throughout the CMEA period.