Air Post stamps

1924, Aviation School, 10c, 25c and 2b, three left sheet margin horizontal imperforated pairs, full OG, NH, VF and scarce, only 100 copies of each denomination were printed, each pair with Sanabria guarantee hs on reverse, C.v. $750 as hinged

600.00

1930, Zeppelin surcharges on Lloyd Aereo Boliviano issue, complete set of three, full OG, NH, F/VF, expertized by G. Buhler and others, C.v. $240 as hinged

150.00