Envelope with no contents sent AIR MAIL, slightly flimsy paper with opening faults on back but is all there, the cds cancels on stamps poor but 1946 visible on back, printed CONTROLE label tied by fine 175 number in circle.  Fine example of large red oval cachet O A T = ONWARD AIR TRANSMISSION which I believe was only stamped on the top Cover in a bundle so are scarce to find.   INSTRUCTIONAL, BELGIQUE, UNITED STATES, NEW YORK.   PLEASE VIEW OUR OTHER EBAY AUCTIONS AND BUY IT NOW ITEMS - MORE ADDED REGULARLY - PLEASE LEAVE FEEDBACK