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Catalog Number
Thumbnail
Denom.
Perf.
Description
Color
Issue Date
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C1
6c
11
Curtiss Jenny
orange
12/10/1918
C2
16c
11
Curtiss Jenny
green
7/11/1918
C3
24c
11
Curtiss Jenny
carmine
5/13/1918
C3a
24c
11
Inverted
carmine
5/13/1918