My brother-in-law (now passed away) showed me a box that he won in a golf tournament years ago. It was a Winchester Model 12 Pigeon grade 5 shot gun. It had never been put together. In 2016 I told him it was worth more than his golf clubs and to take care of it. His widow finally found it and sent me the serial number off of the original warranty. Y 2026808. That seems much higher than what I see on your lists.