Description
Heifetz, OAT and AV2 Markings, Second Edition, special publication of the American Air Mail Society, Second Edition, 2000, study on the OAT stamps of the combined land or sea and airmail transport mostly from the time of the Second World War and also on the AV2 airmail stamps, penultimate edition, 143 pp., many illustrations, very good copy, ex Herry Schaefer #62988