1910, Colonel Ignacio Warnes, 5c green and black, center is inverted and shifted to the bottom left, imperforated block of four, top right stamp with a spot of gum loss, otherwise full OG, NH, VF

150.00

1930, Zeppelin inverted gold bronze overprint on Aviation School of 1b red brown and black, nice quality, full OG, LH, VF and rare, only 25 stamps with inverted overprint were produced

500.00

1930, Lloyd Aereo-Zeppelin, inverted black surcharges, complete set of three, nicely centered and post office fresh, full OG, NH, VF and rare, only 100 sets with inverted surcharges were produced, C.v. $1,025 as hinged

500.00

1930, Lloyd Aereo-Zeppelin, black surcharges, complete set of three, each one with comma instead of dot after denomination, full OG, NH, VF and scarce, only 300 sets possible, C.v. $350 as hinged

150.00