Colnect-4501-060-Mars-and-Mt-Palomar-Observatory.jpg
Source: Colnect
  • Colnect-6223-200-Mariner-4.jpg
Issued by: Hungary
Function: postage
Date: 3/11/1974
Denom: 1fo
Color: multicolored
Design type: Mars exploration
Design: Mars & Hale Telescope
Watermark: unwmk
Perf: 12.5
Catalog value:

In collections: used (Stan Shebs), some private

External links:
Colnect 175601..ration_of_Mars
Colnect 914969-Mariner_4