I don't know much about this engine or about the maker. As far as I know, they only made one model of steam engine, but with variations; probably due to materials availability. The main variation that I'm aware of is in the method of heating. This one is electrically heated. There is also a burner heated version. The boiler on this one is steel but I have seen brass ones. There are also minor differences in the base, some having "Red Injun" embossed into it.
The steel boiler is 2 1/8" diameter x 3 1/2" high. It has a safety valve fitting on the top which is covered by the chimney. It is heated by a 115V electric element. The steam feed goes directly to the back of the port face of the oscillating cylinder; which is 3/8" bore x 1/2" stroke. The crank shaft has a disc crank at one end and a 2 1/2" diameter mazac flywheel at the other.