Caledonian Railway 812 and 652 Classes

The Caledonian Railway 812 and 652 Classes were 0-6-0 steam tender locomotives designed by John F. McIntosh for the Caledonian Railway and introduced in 1899. They had the same boiler type as the 721 “Dunalastair” Class 4-4-0s. They were nicknamed "Jumbos" and they could reach speeds of up to 55 miles per hour.