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Source:
Colnect
Issued by:
United States
Function:
airmail
Date:
5/17
/
1991
Issue:
William T. Piper
Denom:
40c
Color:
multicolored
Design:
William T. Piper
&
Piper Cub
Watermark:
unwmk
Perf:
11
Catalog value:
Prev:
4/27/1991 50c issue=Harriet Quimby d=Harriet Quimby & Bleriot plane
Next:
6/21/1991 50c issue=Antarctic Treaty 30th
External links:
Colnect 101811..tes_of_America
Record of changes