It looks a lot like a Stewart engine. The model engine is very professionally made and I did run it on compressed air. The engine is about 8 1/2" long by 5" wide at its widest. The flywheel is 3 1/2 in diameter. Check out all the photos for further details and features.
Feel free to ask any questions or for more photos if needed. This is a classy engine and would make a great addition to your collection. Included is a nice wood base. I package well for safe arrival and aim to please. You must be happy with this model steam engine as pictured and described.The item "MODEL STEAM ENGINE WITH OILER-WELL MADE-WORKS-AWESOME" is in sale since Wednesday, February 24, 2016. This item is in the category "Business & Industrial\Light Equipment & Tools\Stationary Engines\Parts".
The seller is "garwatch" and is located in Mount Joy, Pennsylvania. This item can be shipped to United States, to Canada, to United Kingdom, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, to Australia, GR, PT, CY, SI, to Japan, to China, SE, KR, ID, to Taiwan, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Germany, to Austria, IL, to Mexico, to New Zealand, SG, to Switzerland, NO, SA, UA, AE, QA, KW, BH, HR, MY, CL, CO, CR, DO, PA, TT, GT, SV, HN, JM.