This jacket dates from the mid 1930s, having close pile fleece, DOT Deco sleeve zips and other features typical of Irvins from this period. There are only two known pre-War makers of Irvins, Wareings and the more famous Irvin Air Chute. This one was almost certainly made by Irvin Air Chute having the typical narrower belt loops, square cornered collar, small collar fixing rings and top quality workmanship.
The main zip is an extremely rare single trunnion DOT, with a brass pull only seen on Irvins from around 1936-8. The stopper is marked "DOT BRITISH" rather than the more common "DOT MADE IN ENGLAND". This zip, is 100% original to the jacket and functions smoothly with no missing teeth. Both sleeve zips are also original to the jacket and are the ultra rare DOT Deco variety which were only used for a short time in the mid 1930s. All the leather pullers are original to the zips and they function smoothly.
The main zip is an extremely rare single trunnion DOT, with a brass pull only seen on Irvins from around 1936-8. The stopper is marked "DOT BRITISH" rather than the more common "DOT MADE IN ENGLAND". This zip, is 100% original to the jacket and functions smoothly with no missing teeth. Both sleeve zips are also original to the jacket and are the ultra rare DOT Deco variety which were only used for a short time in the mid 1930s. All the leather pullers are original to the zips and they function smoothly.