COLOMBIA, 1921, "Valor 10 Centavos" on 50c Pale Green, Inverted Surcharge with Inverted "1" of "10" (Colomphil 2a; Scott C18 var).
Sheet margin at right, lightly hinged, excellent centering, rich color
VERY FINE. ONE OF TWO UNUSED EXAMPLES RECORDED OF THE INVERTED SURCHARGE OF SCOTT NO. C18. A MAJOR RARITY.
This was the top example of a vertical pair that was subsequently separated. An item missing from even the most advanced Colombia Air Post collections. With 2009 Moorhouse certificate.
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