Lot   Cat.#
501 **/*   C30, var
1942, two stamps of 4c in yellow or orange with Bars overprint over black surcharge "First Flight. Liberia - U.S. 1941" 50c, first one has double bars overprint, which is very scarce, priced in Sanabria of 1966 for $150, the other one with bars shifted below of "1941", full OG, NH or VLH (double overprint), VF, both with Sanabria and F. Kessler guarantees

Stamp Auction #80, December 14, 2018. Raritan Stamp, Inc