I am providing some information and photos of my lathe that you can hopefully add to your South Bend database.
Attached are photos of the lathe, serial number card with code numbers and
a photo of the Lear Avia facility in the 40's with several South Bend lathes in the machine shop. 
The lathe was originally ordered and used by Lear Avia in Dayton, Ohio
which made precision devices for Allied aircraft in the war effort,
navigational instruments and other components for privately owned aircraft.
Serial #151,203
Ordered 02/08/1944
Delivered 03/30/1944
Catalog # 8117-C
Size 16" x 6' 
The company Lear Avia was started by William (Bill) Lear who was also the inventor of the eight track tape and Lear Jet.