BURUNDI Space PROOF SET

These sheets commemorate these great Russian achievements in space:

- Spoutnik 1 (1957)
- Laika and Spoutnik 2 (1957)
- Youri Gagarine and Vostok 1 (1961)
- Valentina Tereshkova and Vostok 6 (1963)

This is a set of five progressive proofs comprising four individual colours plus one full colour composite. All these sheets are imperforated. Only 10 sets printed in this proof format !