72157,
Shipped: 04/06/1937,
9" x 3', 
Series R,
Catalog No. 109-Y,
Returned to SBL: 02/22/1939,
reconfigured: Series T,
Shipped:08/29/1940,
See Serial number cards (2),

This particular lathe is fairly special to me. I received it from my father who received it from my grandfather.

My Grandfather, after the war, went to work at Ross Operating Valve in Detroit, Michigan.
When the lathe I am now caretaker for came up for sale as surplus at Ross,
my grandfather purchased it for my father who was studying machining/tool making in school.
My father has since passed the Lathe to me.
The lathe still works however the leadscrews are quite worn and I intend on doing as much of a restoration I can.
I will send you photos, when I can, before and after. I just need to figure out if the Blue paint is original or not.
I have seen other 109y's wearing the same blue. She isn't a big girl, but she's special to me. 
Thanks for you time. 
Ken