In 1971, to celebrate the 150 years of the independence of Costa Rica, the Central Bank issued a limited number of banknotes printed by Thomas de la Rue, London, with an overprint seal which reads “150 AÑOS DE INDEPENDENCIA 1821–1971”.
In 1975, to celebrate its 25th anniversary, the Central Bank issued a 5 Colones D series note, printed by Thomas de la Rue, London, with an overprint seal which reads “XXV ANIVERSARIO BANCO CENTRAL DE COSTA RICA 1950–1975”.
In 1978, on the occasion of the centennial of Banco de Costa Rica, the Central Bank put on circulation a limited number of banknotes printed by Thomas de La Rue, London, with a commemorative inscription on the reverse which reads “1877–CENTENARIO BANCO DE COSTA RICA–1977”, eliminated in the next series.
In 2000, to celebrate its 50th anniversary, the Central Bank issued a limited number of banknotes printed by Thomas de la Rue, London, with an overprint seal which reads “50 BCCR ANIVERSARIO”.
Note: Every banknote of this serie (*) kept the agreement number and the signatures of the original issues.