Poland 1970
Luna 16
The Luna 16 upper stage leaving the Moon and returning to Earth after having grabbed a handful of lunar soil. This stamp was also issued in a commemorative sheet of eight, below, with additional non-postal labels at each end which depicted the launch of Luna 16 and the landing on Earth of the sample capsule under parachutes.
Stanley Gibbons catalogue number:
2021
The sheet has no SG number.