His was found in the original box in the attic. It is a Stuart s50 model steam engine / mill engine and is assembled. Little is know about it except that it turns freely when the flywheel is turned by hand.
Seems like it needs steam or air power and it would run nicely. It has its original instructions dated 1939. Also in the box was a very small double ended box end wrench. I can try to answer any questions about it that I can. The item "Stuart S50 Steam Engine / Mill Engine Antique" is in sale since Sunday, March 13, 2016.This item is in the category "Toys & Hobbies\Vintage & Antique Toys\Other Vintage & Antique Toys". The seller is "eddy_221" and is located in Baton Rouge, Louisiana. 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, RU, 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.