Airmail - Issue of 1965 Overprinted "1972 - XXX Aniversario Creacion Instituto Interamericano de Ciencias Agricolas" 1972
Now showing: El Salvador - Postage stamps - 1972 - Airmail - Issue of 1965 Overprinted "1972 - XXX Aniversario Creacion Instituto Interamericano de Ciencias Agricolas" - 1 stamps.