Queensland A10 Avonside class locomotive

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Queensland Railways A10 Avonside class
Lady Bowen circa 1865
Type and origin Power type Steam Builder Avonside Engine Company Serial number 552-555 Build date 1864 Total produced 4
Specifications Configuration: ​  • Whyte 2-4-0 Gauge 1,067 mm (3 ft 6 in) Fuel type Coal Cylinders 2 outside Cylinder size 10 in × 18 in (254 mm × 457 mm)
Career Operators Queensland Railways Numbers 1-4 Disposition all scrapped

The Queensland Railways A10 Avonside class locomotive was a class of 2-4-0 steam locomotives operated by the Queensland Railways.

In 1864, the Avonside Engine Company, Bristol built four locomotives for the Queensland Railway. After being built they were dismantled and reassembled at North Ipswich Railway Workshops. Originally classified the A class, per Queensland Railway's classification system they were designated the A10 Avonside class in 1890, A representing they had two driving axles, and 10 the cylinder diameter in inches.^[1]

One, 3 Lady Bowen, operated the first Queensland Railways service in 1865 between Grandchester and Ipswich. Initially operating on the Southern & Western Railway out of Ipswich, one was transferred to the Central Railway out of Rockhampton in 1867 and the other three to Maryborough in 1879.^[1]