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Source:
Colnect
Issued by:
Panama
Function:
airmail
Date:
3/1
/
1937
Issue:
1937 air UPU
Denom:
1b
Color:
gray black
Design:
Watermark:
unwmk
Perf:
Catalog value:
Prev:
50c carrose
Next:
6/30/1937 5c issue=1937 air ovpt oc=blk on=1b
External links:
Colnect 654668..Congress_Issue
