COLLECTION OF ERRORS AND VARIETIES ON EXHIBITION AND STOCKPAGES: 1894-1963, about 250 mint or used stamps in singles, pairs, strips of 3 and blocks of 4 or 6, starting with powerful presentation of overprints/surcharges on Map issue, each item profusely described, the unit includes postage, air post and some back of the book items, double, inverted, missing letters and etc. varieties, generally full/part of OG or used, F/VF and rarely seen group, Est. $600-$800 (Image)