| Driving Wheels | 3ft 0ins |
| Weight | 63 tons 18cwt |
| Boiler Pressure | 160psi |
| Cylinders | Outside – 15½in x 21in |
| Tractive Effort | 17,221 lbf |
Between 1896 and 1898 Neilson & Co in Glasgow delivered 36 locomotives to the Western Australian Government Railways (WAGR) which became the start of the 56 locomotives which formed the 56 locomotives of the O class. A further 10 were built by Dübs and Co in Glasgow and another 10 in the Midland Railway Workshops in Australia between 1909 and 1912.
The locomotives were fitted with tenders but also had short boiler side tanks to provide additional water storage to enable the locomotives to operate over the long distances on the country lines in Western Australia. They were designed to be able to haul heavy loads whilst being able to travel on the lines where the axle load was limited.
The O class locomotives initially operated on services on the Eastern Railway and on the South Western Railway to Collie before being replaced by newer engines and moved to branch line duties.
In 1907/08 10 of the locomotives were rebuilt at the Midland Railway Workshop as class N 4-4-4T engines for suburban service work.
The locomotives were withdrawn from service between 1940 and 1962.
This locomotive was built by Dübs and Co in Glasgow in 1898 and entered service in October of that year. It remained in service until July 1961 by which time it had covered around 750,000 miles.
Following withdrawal the locomotive was employed as a steam cleaning engine at Northam Locomotive Depot before finally being taken out of service.
It was transferred to the Rail Transport Museum at Bassendean, Pert in December 1971.
In April 2015 the locomotive was moved to the Walkaway Station Museum under a five year loan agreement.
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Preserved British Steam Locomotives 