Special, very limited version of the famous Big Boy. Factory applied weathering. Locomotive no. 4012 as it was around 1960. With a digital decoder, controlled high-efficiency propulsion, sound effects generator, and auxiliary functions. High efficiency motor with bell-shaped armature and fly-wheel in the boiler. 8 powered axles. 4 traction tires. Articulated frame allows the locomotive to negotiate sharp curves. Boxpok wheels. Middle driving axles with spring suspension. Headlight, tender, and number boards illuminated with maintenance-free LED's. 2 smoke generators (Seuthe no. 11), can be retrofitted, contacts are always ready for operation. Headlights, number boards, and engineer's cab lighting will work in conventional operation and can be controlled digitally. Speed dependent steam locomotive sound effects, bell sound, whistle signal, squealing brakes, as well as acceleration and braking delay can be digitally controlled with the 6021 Control Unit or with the 60652 Mobile Station. Additional operating sound effects can be digitally controlled with the 60212 Central Station. Efficient speaker in the tender, adjustable volume. Coupler hooks at both ends can be inserted in the rail guard. Close coupling between locomotive and tender. Steam lines are hinge-mounted with the cylinders. Separately applied metal grab irons. Many separately applied details. Length over couplings 46.5 cm In MINT condition. Complete package with the wooden box, weight over 3kg Tested and in working order. Look carefully at the photos, they show the condition of the item(s) and are part of the description. Will be carefully packed and sent by registered mail.