Colnect-3674-882-Cathedral-in-Panama-overprint.jpg
Source: Colnect
Issued by: Panama
Function: postage
Date: 3/1/1937
Issue: 1937b
Denom: 1b
Overprint: U//P//U
Ovpt color: black
On: 12/1936 1b issue=4th Spanish-American Postal Congress
Color: black
Design: Panama Cathedral
Watermark: unwmk
Perf: 12
Catalog value:

In collections: unused (Stan Shebs)

External links:
Colnect 657335..Congress_Issue