දැන් පෙන්වන්නේ: නිකරගුවා - නිල මුද්දර (1890 - 1961) - 7 මුද්දර .
1931
Airmail - Postage Stamp of 1928 Overprinted
29. May WM: කිසිවක් නැත සිදුර: 12
![[Airmail - Postage Stamp of 1928 Overprinted, වර්ගය AK]](https://www.stampworld.com/media/catalogue/Nicaragua/Official-stamps/AK-s.jpg)
1931
Postage Stamp of 1928 Overprinted
8. August WM: කිසිවක් නැත සිදුර: 12
![[Postage Stamp of 1928 Overprinted, වර්ගය AN]](https://www.stampworld.com/media/catalogue/Nicaragua/Official-stamps/AN-s.jpg)
![[Postage Stamp of 1928 Overprinted, වර්ගය AN2]](https://www.stampworld.com/media/catalogue/Nicaragua/Official-stamps/AN2-s.jpg)
![[Postage Stamp of 1928 Overprinted, වර්ගය AN4]](https://www.stampworld.com/media/catalogue/Nicaragua/Official-stamps/AN4-s.jpg)
