I recently purchased a couple larger skillets to include one I have not been able to find much information on. The skillet is marked with a raised 16 on the handle and has a round lift assist directly across from the handle. It has an inset heat ring around the bottom, and a small brace on the bottom edge of the handle. I am looking to gain any history on these skillets but aside from a few collectors thinking they may be made in Kentucky prisons or made for the hotel industry i have not been able to find much. Any information would be much appreciated, I have attached a few pics for ref.