The Cooper A-2, contract W535-AC-23381, is a rare jacket suggesting that it was a small contract. This one is a size 44. I have only seen them before in smaller sizes. It is similar to the RW 1401p in that it is made from very similar russet veg tanned, aniline dyed horse hide. It has many of the features of this RW contract except that that collar stand is a little wider, the collar tips are more rounded and the bottom of the pockets are bevelled. The zip is an early Conmar. As a size 44 its a comfortable jacket to wear. It has had a coat of of Pecards and the leather is now supple. The white size tag is still visible in the left pocket. Here are some pictures.