The London and North Western Railway (LNWR) 19in Express Goods Class, otherwise known as the Experiment Goods Class was a class of 4-6-0 steam locomotives. They were essentially a smaller wheeled version of the Whale's Experiment Class and were an early attempt at a mixed traffic engine.Crewe built 170 engines between 1906 and 1909. The LNWR reused numbers from withdrawn locomotives, so the numbering was haphazard. All passed onto LMS ownership in 1923.