Radio Waves Connecting Echo I and Earth
4 ¢ 1960
United States
0.13 - 0.16$
price on 26.02.2023
| Country: | United States |
| Type: | Postage stamps |
| Series: | Echo I -- Communication for Peace Issue |
| Nominal: | 4 ¢ |
| Year: | 1960 |
| Size: | 40 x 25 mm |
| Perforation: | 11 x 10½ |
| Mintage: | 124,000,000 |