Finding a late War Irvin in extremely good condition is very hard these days, so when this one came up for sale some weeks back I jumped at it. Everything is original apart from the main zip, which was a 1950s replacement with black tape, so I replaced it with the correct Lightning. There is no wear to the fleece at the hem or ends of the cuffs, just a little wear at the top of the windflap. The jacket is a size 5 and fits me well. It is exceptionally well made, with straight seams and not the mix of different types of skin as seen on many jackets from 1943 onwards. I believe it to be made by Irvin Air Chute, judging by the high quality workmanship, the square collar and standard size belt loops. The collar rings are the large variety which were used by both Wareings and DGL, but IAC also used them on some of their late war jackets. The sleeve zips are marked with the usual Am and king's crown, with a plain N on the other side. I'm not sure who made the zips, perhaps someone can help here?