This is a very old bipolar electric motor. It is fresh from an old collectors estate. It turns over smoothly. I have not tested it as I don't know how. It has some tattered winding covers as can be seen. It measures about 6 x 11 inches and is about 8 1/4 inches tall. It is quite heavy. It seems to be in good shape with no cracks, breaks, or repairs that I can see or know of other than some chipping on the brushes. It also doesn't look to ...have been used much as the armature looks to have very little wear. It looks like it could be an easy restoration or display it as is! It sits on a cast iron base but I think the armature case is brass or bronze. It just has a great old look to it and would be a great addition to your early electric motor or generator collection! The pictures tell the story. These early motors or generators are getting tougher to find with each passing year! I can deliver for free (or a cold beverage) to Coolspring, PA, Baraboo, WI, or Portland, IN, later this year. I can be reached at 262 573 193 1 if you'd like to talk about it. Good Luck.