Lovely jacket, daft price and a very worn label which has been hand sewn to the jacket. I suspect the original label was removed and the tatty example put on as a substitute. The knits are replacements. A fair price would be around £600 IMO.
http://www.ebay.co.uk/itm/WW2-USAAF-A-2 ... SwDuJWyIfs
http://www.ebay.co.uk/itm/WW2-USAAF-A-2 ... SwDuJWyIfs