166937,
SWING OF LATHE 10L,
LENGTH OF BED  4 1/2,
CATALOG No    187 R,

Markings on tailstock end of way:
    166937  D.W.W.
        J.A.N.

I purchased it around 1990 from a used machinery dealer in Uxbridge Mass.
I think he acquired it from a machine shop in Worcester Mass.