U.S.A. First Day Covers, Premium Cachets, 1938-1939, well over 300 items, many with multicolor designs, many unaddressed, some quite scarce including #853 NY World's Fair with 1st Artcraft cachet, block of 4 with hand cancel, also another 1st Artcraft with D.C. April 2 machine cancel, both addressed, clean & attractive. Estimate  $1,000 - 1,500. $0