Ernst Plank, established in 1866 in Nuremberg, Germany, was a renowned manufacturer recognized for its live-steam engines, tin toy steamboats, trains, and mechanical toys. Specializing in finely finished and mechanically extravagant models, the company became one of the earliest builders of model steam engines.

The diverse and elegant toy line included cars, boats, and trains, with a focus on intricate mechanical designs like turbines, hot air and steam engines. Ernst Plank's models were characterized by high-quality craftsmanship and attention to detail.

The company's trademark, featuring the initials 'E.P.' beneath a winged wheel, was prominently displayed on most products. This distinctive mark, along with the well-known label on the boxes, made Plank's toys easily recognizable in the market.

Surviving the challenges of the First World War, Ernst Plank continued its operations, adapting to changing market demands. In 1930, the factory underwent a transition when it was acquired by the Schaller brothers. The focus shifted to home movie equipment, marking the end of toy production under the Ernst Plank name.