Air Mail Magazine No. 18 (August 1940) By Books / Paperback Collecting › Stamps Publisher: A. Phillips, Air Mail Specialist, January 1940 Price $25.04 Free Shipping Send to a friend Used - Good Good condition. No. 18 (August 1940). "Subscription due" mark on back cover. (stamps, air mail, collecting) $25.04 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.