This 1942 Perry Sportswear A2 has had the sleeves, knits and lining removed to make a vest. Just the thing to layer under a B-3!
http://www.ebay.co.uk/itm/VINTAGE-WWII- ... 3ccb4c8cbb
http://www.ebay.co.uk/itm/VINTAGE-WWII- ... 3ccb4c8cbb