This seller is trying to pass off a post War B-15 as an early Wartime original. It does not have an off set zip or the darts on the shoulders. The zip is a 1960s paper-clip type and this jacket has two inside pockets. I'm flagging it up here in case any newer members thinks it's a genuine Wartime garment and are tempted to buy it.
http://www.ebay.co.uk/itm/vintage-WW2-U ... 5663f76860
http://www.ebay.co.uk/itm/vintage-WW2-U ... 5663f76860