Los-Nr. 988

1920 (December), Typewritten surcharges for Medellin-Cartagena flight: Cliffs and Lighthouse and Sea and Mountains 10c. brown-red with typewritten "0-20" and Cliffs and Lighthouse 10c. brown-red with typewritten "0-30", unused without gum, scarce, signed Champion a.o., certificate PF (1996)