Worldwide Pioneer Flights - Liberia

Worldwide Pioneer Flights - Liberia

1937-45, Waco Plane, 1c-6c, perforated and imperforated complete sets of six in tete-beche pairs, five pairs imperforated between (E. Kessler guarantees) and four stamps with later surcharges (one - inverted), in addition three Air Mail covers of 1937 from Monrovia to Germany, Austria or Gold Coast, stamps with full OG, NH or LH (surcharges, one - used), all are VF, C.v. $557 for stamps only, Est. $300-$400, Sc. #C3A-F, C46A-48B, var