My impulse Ebay find for the past week.... Bower turret style universal viewfinder. Great workmanship and still in good condition. Reminds me of a bit of jewelry. It does look like something made on the 1950s but there is very little information I can find on the web (please share if you know anything). I couldn't pass it up as you don't find them that often in good condition This is all in preparation to find a couple Leica IIIx and Canon screwmount rangefinders for my collection (a Canon IVSB was just recently won and in shipping.. woohoo). It has - 35,50,85,90,135mm - The viewfinder magnifies according to the selected focal length instead of "masking" like other universal viewfinders - you can see the selected focal length and paralax adjustment from inside the viewfinder - silver chrome finish matches beautifully with typical leica finishes. - built in diopter.