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Source:
Colnect
Issued by:
Czechoslovakia
Function:
postage
Date:
3/15
/
1965
Issue:
1965 space research
Denom:
20h
Color:
multicolored
Design:
Maximum Sun-spot Activity
Watermark:
unwmk
Perf:
11.75x11.25
Catalog value:
In collections:
used
(Stan Shebs)
Prev:
2/15/1965 30h issue=town foundings 700th d=TerezĂn
Next:
30h d=Minimum Sun-spot Activity - Quiet Sun
External links:
Colnect 130455..earch_of_space
Record of changes