Frank S is German, ex WWII war dept locomotive that was unused in the war, found after the war by the Russians and put in service rebuilding eastern Germany. Engine is still in operation pulling passengers today. Excellent beginners model, make to use proper steam cylinder oil and NOT motor oil as suggested in the models original instruction manual. It will easily go around R1 curves, is set up to easily add single channel RC control and shows how in the instructions. Gas tank is in the tender and you must put warm water in the tank to keep gas pressure up. Has a large window in the backhead of the boiler to keep an eye on water level. Frank has the deep flanges like all LGB equipment, so it does well staying on the track, going thru tight R1 curves and switches.