Not a 'DUO WIND'er - they're Automatics.
Check out my Duo Wind I put up last night... very different lugs than this one Chris.
oops !!!! I knew that but in my current state of high fever due to the dreaded strep, I had a moment...
i have a pair of these this 52 and a 49 the snap on back wont stay on the 49 may have to get some liposuction to tighten the fit a bit...wow these pix suck lol
Watch back in queue for reconsideration. Bobbee found this 1950 Windsor ad below.