That's the info I was given, I was told that most dx frames had the lower curved bar smaller in size then the upper bar, but on this frame both lower and upper bars are the same size and the rear upper fender mount is a curved round tube instead of the regular curve mount on most dx frames, I was shown a couple of dx frames in a shop and this frame was different in several areas, such as a fender off a dx frame wouldn't fit so I had to modify it to fit and a few other things, was also told by the serial # that it was a 1947/1948, was I given the wrong information??