Märklin H0 - 37753 - Heavy ore locomotive as a 3-piece electric locomotive with connecting rods, series Dm of the Swedish State Railways (SJ). Company numbers: 1201 and 1231 Era III. Used on the ore railway Lulea-Kiruna-Narvik. In service on the ore track Lulea-Kiruna-Narvik. Series 1200, brown base colour, large headlights, cabin doors in old format, large snow ploughs (Norrlands ploughs) and SAB rubber sprung wheels. Operating condition around 1970. Length: 40.7 cm. Locomotive with a digital decoder MFX and extensive sound functions. Front lighting, light function, e-locomotive sounds, signal horn, direct control, light functions 1 & 2, cabin lighting 1 & 2, marshalling whistle, squealing brakes, coupling sound, fan, air compressor, pantograph sounds. Two controlled high efficiency propulsion with flywheel. 1 Motor per locomotive unit with cabin. All 4 driving axles powered in each locomotive unit, with traction tyres. Directional two-point front signal and a red connect signal. Additional third spotlight on top can additional be switched digitally. Lighting in engine room and in cabin 1 and 2 can be controlled separately. Very detailed metal with lots of separately applied details, detailed roof equipment with big fan attachments and compressed air tanks. All 3 locomotive units firmly joined together. Close coupling technique between the individual locomotive units. Condition is as new, works well, no broken off or missing parts. The "Queen" of the ore track in the high north of Norway and Sweden. In original packaging, please see the photos. Please have a look at the photos, they are part of the description.