Black, yellow, magenta, blue & brown litho.
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All Items guaranteed to be authentic; feel free to ask questions.
1918 United States SC C3 Air Post Curtiss Jenny Bi Plane (NOT Inverted), 24c in Carmine Rose & Blue. Mint never hinged, original gum.
Gum skip down center of sheet. Bottom of gum side some gum disturbances.
1918 Air Post Scott# C1 Perf 11 Un Watermarked Unused, Great Center.
1918 & 1923 US Air Post Stamps Complete Set Scott C1, C2, C3, C4, C5, C6. Please Take a look at Pictures, you will receive exactly the same as shown.