| Air Mail Issues of the United States: 1918-1944 |
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Scott C3 - 2,134,888 issued First Day: May 13, 1918 |
Scott C2 - 3,793,987 issued First Day: July 11, 1918 |
Scott C1 - 3,395,854 issued First Day: Dec. 10, 1918 |
Scott C4 - De Havilland Propeller 6,414,576 issued - FDC: 8/15/23 |
Scott C5 - Air Mail Service Insignia 5,309,275 issued - FDC: 8/17/23 |
Scott C6 - De Havilland DH-4 Biplane 5,285,775 issued - FDC: 8/21/23 |
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| Scott C7 - The 10¢ Map Air Mail stamp of 1926 First Day: February 13, 1926 - more than 42,092,800 issued |
Scott C8 - The 15¢ Map Air Mail stamp of 1926 First Day: September 18, 1926 - 15,597,307 issued |
Scott C9 - The 20¢ Map Air Mail stamp of 1927 First Day: Jan. 25, 1927 - 17,616,350 issued |
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| Scott C10 - The 10¢ Lindbergh Mail stamp of 1927 First Day: June 18, 1927 - 20,379,179 issued |
Scott C11 - The 5¢ Beacon Air Mail Stamp First Day: July 25, 1928 - 106,887,675 issued |
Scott C12 - The 5¢ Winged Globe Stamp of 1930 First Day: Feb. 10, 1930 - 97,641,200 issued |
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Scott C13 - 65¢ Graf Zeppelin First Day: April 19, 1930 - 93,536 sold |
Scott C14 - $1.30 Graf Zeppelin First Day: April 19, 1930 - 72,428 sold |
Scott C15 - $2.60 Graf Zeppelin First Day: April 19, 1930 - 61,296 sold |
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Scott C16 - Rotary 5¢ Winged Globe Stamp of 1931 First Day: Aug. 19, 1931 - 57,340,050 issued |
Scott C17 - Rotary 8¢ Winged Globe Stamp of 1932 First Day: September 26, 1932 - 76,648,803 issued |
Scott C18 - Chicago Century of Progress (Baby Zepp) First Day: Oct. 2, 1933 - 324,070 issued |
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Scott C19 - The Six Cent Winged Globe of 1934 First Day: July 1, 1934 - 302,205,100 issued |
Scott C20 - 25¢ Martin M-130 over Pacific Ocean First Day: Nov. 22, 1935 - 10,205,400 issued |
Scott C21 - 20¢ "China Clipper" Over the Pacific First Day: Feb. 15, 1937 - 12,794,600 Issued |
Scott C22 - 50¢ "China Clipper" Over the Pacific First Day: Feb. 15, 1937 - 9,285,300 Issued |
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| Scott C23 -6¢ Eagle Holding Shield First Day: May 14, 1938 - 349,946,500 Issued |
Scott C24 - 30¢ Winged Globe Stamp of 1939 First Day: May 16, 1939 - 19,768,150 Issued |
Scott C25 - 6¢ Twin-Motored Transport Plane (Transport Issue) First Day: June 25, 1941 - 4,746,527,700 Issued |
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| Scott C27 - 10¢ Transport Issue First Day: Aug. 15, 1941 - 67,117,400 Issued |
Scott C28 - 15¢ Transport Issue First Day: Aug. 19, 1941 - 78,434,800 Issued |
Scott C29 - 20¢ Transport Issue First Day: Aug. 27, 1941 - 42,359,850 Issued |
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| Scott C30 - 30¢ Transport Issue First Day: Sept. 25, 1941 -59,880,850 Issued |
Scott C31 - 50¢ Transport Issue First Day: Oct. 29, 1941 - 11,160,100 Issued |
Scott C26 - 8¢ Transport Issue First Day: March 21, 1944 - 1,744,878,650 Issued |
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