Walt looked the guns up for me and found that they had no specific provenance. They were part of a group made for stock. Oddly, a few minutes before my friend made a deal on the guns, I had looked at them and was told they were not for sale. A few years ago a customer came into the gun store where I worked and showed us a 28 gauge A-B. I didn't record the serial number. He may be the same guy who sold me a 16 gauge NID Skeet.