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Source: Wikimedia Commons
Issued by:
Berlin
Function:
postage
Date:
2/17
/
1976
Issue:
1975
Denom:
500pf
Color:
indigo
Design type:
technology (1975)
Design:
radio telescope
(1976)
Watermark:
unwmk
Perf:
14
Catalog value:
Prev:
6/16/1982 300pf d=Maglev
Next:
7/15/1975 50pf bl d=Houses on Naunynstrasse
External links:
Colnect 40769-..and_technology
