Inrteresting envelope with rubber stamp logo: "Carried by us in the Mac Robertson International Air Race London Melbourne, 3rd Place, Time 3 days, 21 hrs, 5 min, 2 sec, Commander American Crew Col. Roscoe Turner". Carries both British and Australain stamps and cancellations. Addressed to Turner in Melcourne. Very good and quite displayable in that all information is on the front of the envelope; no backstamps.
