I do remember Chester Machine Tools selling that lathe and mill combination, probably at least 25 years ago. They also offered the lathe and mill separately.
The milling head and column is from the old 4 speed belt drive Chester Champion mill, as Nigel B suggests.
The lathe is the same as the old Chester Champion lathe, with its belt drive and deep bed casting formed with a single V and single flat guidway both shared by the saddle and tailstock. I think the centre height was around 4 or maybe 4 1/2 inches, not certain coz it was a long time ago.
I think the lathe was discontinued by Chester long before the Champion milling machine complete with milling table was. These much earlier Champion machines are not related to any of the current Champion named machines offered by Chester.
Edited By Lathejack on 11/01/2021 15:05:34