1867-68 100c blue, block of ten, n.h. and post office fresh, v.f., handstamped on back and signed Gebruder Senf (Cat No. 7) (Image)

Est.US$750

1895 (30 Mar) registered cover from Sucre to Paris, franked with 1893 5c blue and used in combination with pairs of 1894 5c and 100c Arms, registration numbers filled in with red ink, Buenos Aires transit and Paris arrival postmarks (Image)

Est.US$250

1924 10c, 25c and 1b Aviation School, imperforate horizontal pairs, three different, last one without gum, others n.h., v.f., cat. $1200 (Cat No. C1,3,5var) (Image)

Cat. $1200, Est.US$500

1925 (7 Aug) flown cover from Sucre to Cochabamba, paying 50c with three adhesives handstamped with three-line "Correo Aereo A Cochabamba 7-VIII-1925", with corresponding departure and arrival postmarks, fine (Image)

Est.US$150

1925 (12 Aug) flown cover from Cochabamba to La Paz, franked with the overprinted 50c, tied by oval first flight datestamp, with arrival pmk on both sides (Image)

Est.US$200

1930 first flight cover "Bolivia-Europa", Arica, Chile leg of the flight, with 7 October arrival pmk, signed by the pilot, v.f. (Image)

Est.US$400