24c Carmine Rose & Blue, 1918 Air Post, Grounded Plane Variety (C3 var). Single hinge mark, brilliant color, plane shifted significantly downwards with wheels well into "Cents", perfectly centered with wide margins

EXTREMELY FINE GEM. A SUPERB EXAMPLE OF THE RARE 1918 24-CENT FIRST AIR POST ISSUE GROUNDED PLANE VARIETY. THIS PHENOMENAL STAMP HAS BEEN AWARDED THE GRADE OF SUPERB 98 BY P.S.E.

The true Grounded Plane stamps, in which the wheels of the plane break thru the top of "Cents", come from portions of three sheets. The discovery sheet was owned and broken up by J. Klemann of Nassau Stamp Company. A second sheet was discovered in 1946 and sold in the Thomas A. Matthews sale (H.R. Harmer, Nov. 4, 1964), where it was purchased by Georges A. Medawar, publisher of Sanabria Airmail Catalogue. In Linn's Stamp News of April 21, 1986, specialist Joseph R. Kirker Jr. published his research revealing a third source of this variety.

With 2006 P.S.E. certificate (OGh, Superb 98; this variety is unpriced in SMQ).

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