Antique Electric Motor identification

[Patrickgeorge]

Recently received this electric motor from my grandfathers estate and it is very intriguing to say the least. have been unable to figure out what type of electric motor it is. As seen in the photos it has two electric coils and a fly wheel. After oiling it up, tested it out with a D battery and it works. I️ just want to know how many volts should be using and what type of motor it is. Any information would be very appropriated. Thank you

 

[Diesel Mercedes]

There's antique, but my goodness that's truly ANTIQUE. That's a museum piece.

 

[redmondjp]

That looks like something that was used as a demonstrator in a college engineering class.