Niger
Now showing: Niger - Postage stamps (1959 - 2023) - 1 stamps.
1973
The 100th Anniversary of Dr. Hansen's Discovery of Leprosy Bacillus
29. March WM: None Perforation: 12½ x 13
![[The 100th Anniversary of Dr. Hansen's Discovery of Leprosy Bacillus, type MK]](https://www.stampworld.com/media/catalogue/Niger/Postage-stamps/MK-s.jpg)
