Lot #1508 LARGE LOTS & COLLECTIONS UNITED STATES 1941 test stamps, unexploded 37c booklet with one pane (another removed), also single on cover (New York Jan 10, 1941, three days earlier than Scott's Jan. 13 "earliest documented use"). Also included are Great Britain, 1937 "Poached Egg" vertical strip of five, plus four singles on covers, interesting lot