Hi Hope I can find some more info about this jacket. From the research I have done, it appears to be a Beck 666 RS. Im curious about its age. I was told it was late 40's to early 50's. I was also told it was found amongst various vintage military uniforms. The main zipper is a FLASH zipper and the sleeve zippers are six inch SERVAL zippers. Since it doesn't have the Talon zippers I'm not sure of its age. I have found some vintage clothing with FLASH zippers from the 40's and that the zipper I believe is British. Wonder if the jacket made its way to the UK at one time and was replaced. It has two RAU nipple snaps on the collar. There is a size tag in the right chest pocket. The lining appears to be rayon and it is worn out on the bottom and I was able to take a pic of the inside construction of the jacket. It appears to be made of two types of leather which may explain the different patinas. Any information would be greatly appreciated. Thanks so much!