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Source:
Colnect
Issued by:
Panama
Function:
airmail
Date:
6/30
/
1937
Issue:
1937 air ovpt
Denom:
5c
Overprint:
Ovpt color:
black
On:
No base stamp identified
On-desc:
1b
Color:
Design:
Watermark:
Perf:
Sort pos:
1
Catalog value:
Prev:
3/1/1937 1b grayblk issue=1937 air UPU unwmk
Next:
5c dkbl unwmk
External links:
Colnect 654434..37_Definitives
