Airmail - The 6th National Philatelic Exhibition, San Jose 1975
Now showing: Costa Rica - Postage stamps - 1975 - Airmail - The 6th National Philatelic Exhibition, San Jose - 4 stamps.
1975
Airmail - The 6th National Philatelic Exhibition, San Jose
14. August WM: None Perforation: 12½
![[Airmail - The 6th National Philatelic Exhibition, San Jose, type UU]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/UU-s.jpg)
![[Airmail - The 6th National Philatelic Exhibition, San Jose, type UV]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/UV-s.jpg)
![[Airmail - The 6th National Philatelic Exhibition, San Jose, type UW]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/UW-s.jpg)
![[Airmail - The 6th National Philatelic Exhibition, San Jose, type UX]](https://www.stampworld.com/media/catalogue/Costa-Rica/Postage-stamps/UX-s.jpg)