This vintage plaid mackinaw was made in the 1930s.  It has a button front, with six pockets, two of which share the pocket flaps of the larger patch pockets upon which they are mounted.  The coat has an unusual cutaway collar with loop closure.  It has a caped back, with side entry game pouch and extended double sleeve/cuffs.  Several versions based on this original model of coat have been produced by Ralph Lauren under both the RRL and Polo lines.