United States Air Mail

1918

Curtis Jenny Biplane

C1

12/10/1918

6¢ Organe

2,134,988

C2

07/11/1923

16¢ Green

3,793,987

C3

05/13/1918

24¢ Rose & Blue

3,095,955

C3 Inverted

05/13/1923

24 ¢ Rose & Blue

100 (1 plate) Error