Visar nu: Lettland - Flygpost (1921 - 1933) - 9 frimärken.
10. januari WM: 2 storlek på arket: 100 Perforering: 11½
![[Airmail - Different Watermark, Typ B3]](https://www.stampworld.com/media/catalogue/Latvia/Airmail/B3-s.jpg)
![[Airmail - Different Watermark, Typ B4]](https://www.stampworld.com/media/catalogue/Latvia/Airmail/B4-s.jpg)
![[Airmail - Different Watermark, Typ B5]](https://www.stampworld.com/media/catalogue/Latvia/Airmail/B5-s.jpg)
5. december WM: 2 storlek på arket: 100 Perforering: 10¾
![[Airmail - Not Issued Stamps Overprinted "LATVIJAS AIZSARGI" & Surcharged, Typ C]](https://www.stampworld.com/media/catalogue/Latvia/Airmail/C-s.jpg)
![[Airmail - Not Issued Stamps Overprinted "LATVIJAS AIZSARGI" & Surcharged, Typ C1]](https://www.stampworld.com/media/catalogue/Latvia/Airmail/C1-s.jpg)
![[Airmail - Not Issued Stamps Overprinted "LATVIJAS AIZSARGI" & Surcharged, Typ C2]](https://www.stampworld.com/media/catalogue/Latvia/Airmail/C2-s.jpg)
9. december WM: 2 storlek på arket: 100 Perforering: 10¾
![[Airmail - Imperforated, Typ C3]](https://www.stampworld.com/media/catalogue/Latvia/Airmail/C3-s.jpg)
![[Airmail - Imperforated, Typ C4]](https://www.stampworld.com/media/catalogue/Latvia/Airmail/C4-s.jpg)
![[Airmail - Imperforated, Typ C5]](https://www.stampworld.com/media/catalogue/Latvia/Airmail/C5-s.jpg)
