Palomar Mountain Observatory, California. 3 ¢ — United States, 1948
Palomar Mountain Observatory, California. (United States, 1948), face value 3 ¢, “Dedication of Palomar Observatory” series. Photo, catalogue value, details…
- Series
- Dedication of Palomar Observatory
- Issue date
- 1948
- Face value
- 3 ¢
- Colors
- Blue
- Print run
- 61,000,000
- Yvert
- US 517
- Michel
- US 579
- Stanley Gibbons
- US 963
- Scott
- US 966