Air Mail Issues of the United States: 1918-1944
Number C3
Curtiss "Jenny"
2,134,888 issued
May 13, 1918
Number C2
Curtiss "Jenny"
3,793,987 issued
July 11, 1918
Number C1
Curtiss "Jenny"
3,395,854 issued
Dec. 10, 1918
Number C4
De Havilland Propeller
6,414,576 issued
8/15/23
Number C5
Air Mail Service Insignia
5,309,275 issued
8/17/23
Number C6
De Havilland DH-4 Biplane
5,285,775 issued
8/21/23
Number C7
10¢ Map Air Mail
February 13, 1926
42,092,800+ issued
Number C8
15¢ Map Air Mail stamp
September 18, 1926
15,597,307 issued
Number C9
20¢ Map Air Mail stamp
Jan. 25, 1927
17,616,350 issued
Number C10
10¢ Lindbergh Mail
June 18, 1927
20,379,179 issued
Number C11
5¢ Beacon Air Mail
July 25, 1928
106,887,675 issued
Number C12
5¢ Winged Globe
Feb. 10, 1930
97,641,200 issued
Number C13
65¢ Graf Zeppelin
April 19, 1930
93,536 sold
Number C14
$1.30 Graf Zeppelin
April 19, 1930
72,428 sold
Number C15
$2.60 Graf Zeppelin
April 19, 1930
61,296 sold
Number C16
Rotary 5¢ Winged Globe
Aug. 19, 1931
57,340,050 issued
Number C17
Rotary 8¢ Winged Globe
September 26, 1932
76,648,803 issued
Number C18
Century of Progress
Oct. 2, 1933
324,070 issued
Number C19
Six Cent Winged Globe
July 1, 1934
302,205,100 issued
Number C20
25¢ China Clipper
Nov. 22, 1935
10,205,400 issued
Number C21
20¢ China Clipper
Feb. 15, 1937
12,794,600 Issued
Number C22
50¢ China Clipper
Feb. 15, 1937
9,285,300 Issued
Number C23
6¢ Eagle Holding Shield
May 14, 1938
349,946,500 Issued
Number C24
30¢ Winged Globe
May 16, 1939
19,768,150 Issued
Number C25
6¢ Transport Issue
June 25, 1941
4,746,527,700 Issued
Number C27
10¢ Transport Issue
Aug. 15, 1941
67,117,400 Issued
Number C28
15¢ Transport Issue
Aug. 19, 1941
78,434,800 Issued
Number C29
20¢ Transport Issue
Aug. 27, 1941
42,359,850 Issued
Number C30
30¢ Transport Issue
Sept. 25, 1941
59,880,850 Issued
Number C31
50¢ Transport Issue
Oct. 29, 1941
11,160,100 Issued
