LIBERIA: 312P: Eleven different PROGRESSIVE PROOFS in LL corner blocks of four, with SPECIMEN overprint, all signed mostly by printer Herman Jaffe and the final one by designer Arthur Szyk, clean, very fine. (Image)

Est. 250+

332-337: 1952, Jehudi Ashmun issue incl set signed by the designer, IMPERFORATE sheetlet proofs in single colours red, green and colour of issue, also background colour trials in black, blue, and green, singles and blocks of four colour trials in issued colours, with MISSING CENTERS, imperf singles, pairs and blocks of four for all values in issued colours, SPECIMEN on singles and blocks, progress proof of 1949 Ashmun issue, few stains otherwise f-vf. (Image)

Est. 750+