El Salvador
Näytetään: El Salvador - Postimaksumerkit (1867 - 2020) - 1 postimerkit.
1979
Airmail - The 25th Anniversary of Social Insurance Institute (I.S.S.S.)
14. toukokuu VM: Ei mitään Perforaatio: 14 x 14½
![[Airmail - The 25th Anniversary of Social Insurance Institute (I.S.S.S.), tyyppi QI]](https://swmedia-4cd6.kxcdn.com/media/catalogue/El-Salvador/Postage-stamps/QI-s.jpg)
![[Airmail - The 25th Anniversary of Social Insurance Institute (I.S.S.S.), tyyppi QI1]](https://swmedia-4cd6.kxcdn.com/media/catalogue/El-Salvador/Postage-stamps/QI1-s.jpg)
