Lot
591 
Colombia, 1920, 10c "Tail of Biplane" Multicolored, ample to large margins, minor margin scuff at bottom, tied by purple "C.C.N.A. Barranquilla" cachet handstamp on cover to Cartagena, in combination with 1917, 2c carmine rose + 1917, ½c on 20c black pair and 3c on 10c violet (341, 352-352) tied by bold "Correos Aereos, Barranquilla, Mar 4, l920" oval handstamps; cover file fold affecting two regular issues, otherwise Very Fine; signed Holcombe. Scott No. C7; $3,800 for off cover Estimate $3,000 - 4,000.
THE RAREST OF ALL 1920 10C COMPANIA COLOMBIANA DE NAVEGACION AEREA MULTICOLOR ISSUES.