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VERY FINE. ONE OF THE RAREST COLOMBIAN 1921 AIR POST SURCHARGES. THIS IS THE SOLE RECORDED UNUSED EXAMPLE.
Only one unused, eight used and five covers have been recorded. Ex Boonshaft and Goeggel. Signed A. Brun. With 2014 Moorhouse certificate. Scott $1,850.00 which is unreasonably low for only one example known. (Image)
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VERY FINE. A RARE USE OF THE SCOTT NO. C22 AIR POST SURCHARGE ON COVER. ONLY FIVE COVERS ARE RECORDED, TWO OF WHICH ARE TO NEW YORK.
Despite being addressed to New York, there is no indication of an onwards journey either by way of stamps or postal markings (similar on other recorded cover to New York). With 2016 Moorhouse certificate. (Image)
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. (Image)
VERY FINE. A REMARKABLE PAIR OF NO. C19 USED IN COMBINATION WITH ANOTHER AIR POST SURCHARGE TO AN OVERSEAS DESTINATION. ONLY NINE COVERS OF EITHER SURCHARGED STAMP ARE KNOWN ON COVER.
Illustrated in Cruz-Bortfeldt on page 14. With 1993 Rendon certificate. (Image)