I managed to acquire an old 9" southbend last year and have started to recondition the machine. I am unsure of how old the unit is, but the guy I got it from said he thought it was around the 1930's era. The serial number on the bed is 63573.
The machine is an underbed drive unit, which I have already stripped and repainted all of this was in good shape bar the many layers of paint and dirt.
I am currently working of getting all of the layers of paint off the bed so I can get the ways reground as there is a little wear near the headstock (to be expected for its age).
Can any body shed some light on whether the age is correct.