Increasing train loads at the beginning of the 20th century necessitated more powerful units even in Bavaria. In the early part of 1907, Maffei was therefore given the contract to build a Pacific compound locomotive for the Bavarian State Railroad. The first unit left the builder as early as in July of 1908. Another six locomotives followed it in the same year (road numbers 3601-3607). By 1911, Maffei delivered another 16 mostly identical units in three builder series (a to c) (road numbers 3608-3623). Departing from these first 23 locomotives, the next 18 units (Series d and e, Maffei 1912/1913, road numbers 3624-3641) were equipped with driving wheels with 2,000 mm / 78-3/4" diameter instead of 1,870 mm / 73-5/8". This also caused the boiler to sit higher on these units and they were quickly known as the "High Steppers". The locomotives were initially based in Munich at the main station and they ran from there mainly in express trains in all directions, such as the line Munich – Ulm – Stuttgart.
- Driving wheels modelled to scale with a diameter 2,000 mm / 78-3/4"
- Wheel flange depth 1.0 mm
- Scale buffer beam height in the front
- Factory-installed smoke unit
- Detailed modelling of the cab Locomotive includes an mfx decoder and extensive light and sound functions
- Attractive paint scheme for the passenger cars.
Model:The steam locomotive is constructed mostly of metal. The running gear is intricately constructed of die-cast metal with a partially open bar frame. There is an open view through the running gear. The cab is modelled in detail. The lamps are designed to be white. The locomotive has 5-pole high-efficiency propulsion with a flywheel. The locomotive also has a factory-installed smoke unit, a lighted cab, a light for oncoming trains, which can be controlled in digital operation, and an mfx decoder and extensive sound functions. There is a close coupling mechanism between the locomotive and tender with a "display case position". The tender has intricate smoke box doorsteps, and a hook coupler and an air hose on the rear as well as piston rod protective sleeves are included. The passenger cars are modelled in detail and are full scale length. They also have spoked wheelsets.
Total length over the buffers approximately 135 cm / 53-1/8".