Zobrazujú sa: Lotyšsko - letecká pošta (1921 - 1933) - 9 známky.
10. január WM: 2 Veľkosť hárka: 100 Perforácia: 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 Veľkosť hárka: 100 Perforácia: 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 Veľkosť hárka: 100 Perforácia: 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)
