Colnect-3931-424-Atom-symbol-and-book.jpg
Source: Colnect
Issued by: Poland
Function: postage
Date: 7/21/1964
Issue: Polish People's Republic 20th b
Denom: 60g
Color: dark violet blue & gray
Design: Atom symbol & book
Watermark: unwmk
Perf: 9-14.5
Sort pos: 1
Catalog value:

In collections: used (Stan Shebs)

External links:
Colnect 136372..lic_20th_anniv