Prototype: Steam locomotive of the series 81 (formerly Prussian G 8.1) with coal tender from the Belgian State Railways (NMBS/SNCB). Moss green/black basic color scheme. Locomotive operating number 81.340. Operating condition in the early/mid-1950s. Model: With digital decoder and extensive sound functions. Regulated high-performance drive with flywheel in the boiler. 4 driven axles. Traction tires. Locomotive and tender largely made of metal. Prepared for smoke set 72270. Direction-dependent two-light front signal that changes and can be operated conventionally or switched digitally. Lighting with warm white LEDs. Fixed short coupling with kinematics between locomotive and tender. Many separately applied details such as pipes and sandfall pipes. Brake lines and screw coupling imitations are included. Length over buffers 21 cm. A matching passenger car set can be found in the Märklin H0 range under item number 43054. Additionally, various Belgian freight cars from recent years, with item numbers 48832, 46029, or 46984, are also compatible. All cars come with the required DC wheelsets specified. This model is available in alternating current version in the Märklin H0 range under item number 39539.