I just picked up a 9" SB lathe. The data plate on the end of the lathe says catalog # 459Z, and another plate has the C.M. Burns Machinery Co. name on it. So it must have been mfg'd by CMB for SB? I can't find a catalog # of 459Z referenced anywhere. If I do the math on the serial number it says it's a 1939 +/- a year. It seems to be all there and is supposed to function, but I'd like to know exactly what I have!