Lot 50041 – Consular Mail Great Britain 1923 1p and 50c inverted overprint on cover

Gran Bretaña (Great Britain). 1924, Oct. 10. Envelope up to 75 grams from London to Bogota franked by Consular Mail “G.B.” 1923 1p and 50c, handstamped in violet, the latter with inverted overprint, additionally franked with Colombian national postage 5c and 10c, all tied in transit by “Servicio Postal Aéreo Scadta/Barranquilla” cds’s, backstamped on receipt. The only cover recorded bearing this 50 centavos with inverted overprint. Ex Toro Pinzón.