Colnect-441-115-Technical-and-Scientific-Knowledge-Society.jpg
Source: Colnect
Issued by: Czechoslovakia
Function: postage
Date: 12/12/1963
Denom: 60h
Color: brown violet
Design: atom diagrams & head
Watermark: unwmk
Perf: 11.5x12
Catalog value:

In collections: used (Stan Shebs)

External links:
Colnect 131885..wledge_Society