| Type | First Day Cover Stamp Envelope |
|---|---|
| Year | 1978 |
| Signed | No |
| Theme | Astronauts & Space Travel |
| Country of Origin | United States |
Check the listing for details. United States First Day Cover Stamp Envelope Viking Space Missions. Made in United States. Listed at 9.99 USD. Cachet: The artwork on the left (cachet) illustrates the Viking orbiter and lander in space.