CAM-5 First Flight 3-cent Carmine Error

United States · 1926 · 3¢

A 3-cent carmine stamp on a postal stationery cover, featuring an airplane in flight, commemorating the first flight on Contract Air Mail route CAM-5. This specific stamp is noted as an unusual color error, as 3-cent stamps should be violet, not carmine.

Issued in 1926, this stamp marks the inaugural flights of Contract Air Mail route CAM-5, a significant step in the development of airmail service in the United States. The color error makes this particular example a notable philatelic item from the era of early aviation.