Bidspirit auction | Liberia - Pres. Tubman's Visits

Liberia - Pres. Tubman's Visits to Europe - 1958, imperforate 5c x3 and 10c, 15c x3, postage and air post, 6 wrong Flag varieties for each value of the set of 7 in top right corner sheet margin blocks of four, the total is 42 imperf blocks of error stamps, full OG, NH, VF, a common imperforate set in blocks is included, Est. $600- $700, Scott #368-70, C114-17 imp var