Great info there from "stronglight"

I would like to add that this is the bar and stem that came on the early sixties Schwinn Paramount.
I am surprised to hear that they came in a 42cm width. I've never seen one that wide. If someone has one of these in width wider than 38cm(c-c where the brake levers mount), I would be interested in buying it for my '62 Paramount. I am also interested in buying the corresponding Titan stem with the 27mm clamp in 9cm or shorter length.