Airmail #C7-C10 covers. Dealer balance of 19; better include C9(2), C10(6) and C11 on German Airship to Tokyo, C10a booklet pane, C10 signed by Herbert Hoover, C8 FDC, and several first flights including C7-C9 on Columbian entires, fine to very fine lot, inspection suggest. Estimate  $300 - 400. $0