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Patrick Stirling was appointed locomotive superintendent of the GSWR in 1853 and this was his first design. They had domedboilers and column-type safety valves above the firebox. They were numbered 95–98.
Withdrawal
The class was withdrawn by James Stirling during 1874–5.
References
Baxter, Bertram (1984). British locomotive catalogue 1825–1923. Vol. 4. Buxton: Moorland Publishing. p. 138.