OR76CRP004 CR Class 264/611 BR British Railways Plain Black 56020 Steam LocomotiveExpected Delivery Q2 2027 (Subject to Change at Manufacturer's Discretion). The Caledonian Railway 264 and 611 Classes, commonly known as the Pug, were 0 4 0 saddle tank locomotives built for the Caledonian Railway. The Class 264 was introduced in 1883 to a design by Dugald Drummond and built by Neilson and Company, with the related Class 611 following from 1895 under John F. McIntosh and built at St Rollox Works. Some of these were paired with a