Τώρα εμφανίζεται Ελ Σαλβαδόρ - Γραμματόσημα (1920 - 1929) - 57 Γραμματόσημα.
1929
Airmail - No. 475 Overprinted "Servicio Aéreo"
1. Δεκέμβριος WM: Κανένα Διάτρηση: 14
![[Airmail - No. 475 Overprinted "Servicio Aéreo", τύπος DL1]](https://www.stampworld.com/media/catalogue/El-Salvador/Postage-stamps/DL1-s.jpg)
1929 -1930
Stamps of 1924 & 1926 Overprinted "Servicio Aéreo"
28. Δεκέμβριος WM: Κανένα Διάτρηση: 14
![[Stamps of 1924 & 1926 Overprinted "Servicio Aéreo", τύπος DK2]](https://www.stampworld.com/media/catalogue/El-Salvador/Postage-stamps/DK2-s.jpg)
![[Stamps of 1924 & 1926 Overprinted "Servicio Aéreo", τύπος DM1]](https://www.stampworld.com/media/catalogue/El-Salvador/Postage-stamps/DM1-s.jpg)
![[Stamps of 1924 & 1926 Overprinted "Servicio Aéreo", τύπος DN1]](https://www.stampworld.com/media/catalogue/El-Salvador/Postage-stamps/DN1-s.jpg)
![[Stamps of 1924 & 1926 Overprinted "Servicio Aéreo", τύπος DP1]](https://www.stampworld.com/media/catalogue/El-Salvador/Postage-stamps/DP1-s.jpg)
