Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Liberia - 1941, First Flight Liberia - US, black surcharges 50c on 2c, 3c, 4c, 5c, 10c and 30c or overprints on 50c and $1, set of eight values (no 50c/20c), full OG, NH or VLH (No.C19), VF and scarce assemblage, each stamp with expert's sign, C.v. $910 as hinged, Est. $500-$600, Sc. #C18/26