The 20th Anniversary of the Launch of the Mars Polar Lander 2019
2020-2023Now showing: Sierra Leone 2018-Present - Postage stamps - 2019 - The 20th Anniversary of the Launch of the Mars Polar Lander - 4 stamps.
Now showing: Sierra Leone 2018-Present - Postage stamps - 2019 - The 20th Anniversary of the Launch of the Mars Polar Lander - 4 stamps.
![[The 20th Anniversary of the Launch of the Mars Polar Lander, type ]](https://www.stampworld.com/media/catalogue/Sierra-Leone-2018_Present/Postage-stamps/1119-b.jpg)
