The seller claims this size 48 RW 27752 is an original AVG jacket. There is no provenance given whatsoever. The AVG was disbanded on 4th July 1942. The RW 27752 contract dates to April/May 1942 with production lasting for several months. It might just have belonged to a member of the AVG who wore the jacket when he returned to the USA.
http://www.ebay.co.uk/itm/120926918736? ... 1423.l2649
http://www.ebay.co.uk/itm/120926918736? ... 1423.l2649