1924 10c, 25c and 2b imperforate singles, l.h., v.f. (Cat No. C1,3,6var) (Image)

Est.US$250

1925 50c orange, red "Correo Aereo A La Paz" overprint inverted, h.r., tiny gum stains, otherwise fine, with 2001 PFC (Cat No. San.3a) (Image)

Est.US$250

1930 Zeppelin, 10c vermilion and black, overprinted in brown, well centered, h.r., v.f., signed Kessler, Sanabria, also Herbert Bloch, with 1971 Friedl certificate. A rare stamp, only 50 issued, cat. $2500 (Cat No. C13) (Image)

Cat. $2500, Est.US$1,000

1930 15c double overprint, one inverted, 25c inverted overprint, v.f., only a few exist (Cat No. C14,15var) (Image)

Est.US$500

1930 set of three, overprints inverted, h.r., fine-v.f., signed Sanabria, Champion, etc., cat. $1050 (Cat No. C24a-26a) (Image)

Cat. $1050, Est.US$250