Prezentat acum: Letonia - Poșta Aeriană (1921 - 1933) - 9 timbre.
10. Ianuarie WM: 2 Marimea foii: 100 Perforare: 11½
![[Airmail - Different Watermark, Tip B3]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Latvia/Airmail/B3-s.jpg)
![[Airmail - Different Watermark, Tip B4]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Latvia/Airmail/B4-s.jpg)
![[Airmail - Different Watermark, Tip B5]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Latvia/Airmail/B5-s.jpg)
5. Decembrie WM: 2 Marimea foii: 100 Perforare: 10¾
![[Airmail - Not Issued Stamps Overprinted "LATVIJAS AIZSARGI" & Surcharged, Tip C]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Latvia/Airmail/C-s.jpg)
![[Airmail - Not Issued Stamps Overprinted "LATVIJAS AIZSARGI" & Surcharged, Tip C1]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Latvia/Airmail/C1-s.jpg)
![[Airmail - Not Issued Stamps Overprinted "LATVIJAS AIZSARGI" & Surcharged, Tip C2]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Latvia/Airmail/C2-s.jpg)
9. Decembrie WM: 2 Marimea foii: 100 Perforare: 10¾
![[Airmail - Imperforated, Tip C3]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Latvia/Airmail/C3-s.jpg)
![[Airmail - Imperforated, Tip C4]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Latvia/Airmail/C4-s.jpg)
![[Airmail - Imperforated, Tip C5]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Latvia/Airmail/C5-s.jpg)
