The Winchester Collectors Assn based in Montana and Cody, Wyoming has members doing research on the Model 71. I am a member
and another member is working on research for articles and a possible book. His research includes dates of manufacture
and models for the year-along with actual rifles currently held by owners.
I have both standard and Deluxe Model 71 rifles. Prefer the Deluxe pre-war long tang versions for hunting and handling.