COLOMBIA, 1921, "Valor 10 Centavos" on 50c PALE GREEN - INVERTED "1" of "10", - AIR POST SURCHARGE, #C18, Colomphil #2, small h.r., sheet margin at left, minor creasing in margin at bottom and small thin, very fine and rare, Fletcher records four unused examples and Colomphil states eleven known, signed Scheller, Scott $1,900.00 (Image)

$600