The 45xx class 2-6-2 prairie tank engines formed the backbone of the GWR branchline motive power fleet. These were surprisingly powerful locomotives, later classified 3MT by BR, easily capable of hauling branchline-sized passenger and goods trains.
Bachmanns' model is a well detailed replica of the class with good slow-running performance.
4571 is one of the original design locomotives with flat-topped side tanks painted British Railways lined green livery with early emblems.