Airmail - The 2nd Central American Philatelic Convention - Overprinted "II CONVENCION FILATELICA CENTROAMERICANA SETIEMBRE 1962" 1962
Now showing: Costa Rica - Postage stamps - 1962 - Airmail - The 2nd Central American Philatelic Convention - Overprinted "II CONVENCION FILATELICA CENTROAMERICANA SETIEMBRE 1962" - 2 stamps.