Colnect-447-284-Heinrich-Hertz-1857-1894.jpg
Source: Colnect
Issued by: Czechoslovakia
Function: postage
Date: 12/7/1959
Denom: 1k
Color: multicolored
Design type: radio & telegraph inventors
Design: Hertz
Watermark: unwmk
Perf: 11.75x11.25
Catalog value:

In collections: used (Stan Shebs)

External links:
Colnect 134033..Radioinventors


Record of changes