Chad  1972
Luna 16.  Luna 17/Lunokhod 1
Two nice illustrations of Soviet automated Moon landers, released as a pair in 1972. The first shows the Luna 16 ascent stage taking off from an improbably rugged Moonscape, while the second shows Lunokhod 1 gingerly crossing an equally improbable crevice in the surface. The inscription at the bottom of the right-hand stamp, “Luna XVII”, refers to the Luna 17 lander which delivered Lunokhod to the surface.

Stanley Gibbons catalogue numbers:
100f  –  381
150f  –  382