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Source: Wikimedia Commons
Issued by:
Russia
Function:
postage
Date:
8/15
/
1951
Denom:
40k
Color:
gray black
Design type:
scientists
(1951)
Design:
Yablochkov
Watermark:
unwmk
Perf:
12
Sort pos:
7
Catalog value:
In collections:
used
(Stan Shebs)
Prev:
40k grn d=A.N. Lodygin
Next:
40k orgred d=Butlerov
External links:
Colnect 282508..iet_Union_USSR
Record of changes