There is no information stamped on the DC generator data plate. An output of 125 VDC was common. It is likely that this generator supplied the field (exciter) current for a much larger alternator.
Click on the images below for a larger view.
General Electric Turbine & Generator
This Single-Stage GE Turbine was made in the Schenectady, NY plant. It runs on 100 Lbs. of steam pressure without superheat. The exhaust pressure is 5 Lbs., an indication of it’s high efficiency. The power output is 35 kW, or about 47 HP.