Picked this up from Ebay. It is a double action steam engine. Seems complete except for the crankcase cover. There is a 2 piece aluminum base that someone added on but it looks like originally it may have set on a box type base. There does not appear to be any markings on the castings so I have no idea what company made it. It runs very smoothly on air. Just ran it for a minute. The crankcase looks like is should have oil in it, I would guess about 1/3 full. It also came with a flyball governor that was never completely finished. the governor has a mount and does bolt onto the engine, but there is a line on the flywheel that looks like it was marking where a groove should be cut for the governor belt. It is about 16" long and 8" high at the crankcase including the stands. The flywheel is 6 1/2" in diameter and 1" wide.