Four examples of class designed by Patrick Stirling were built for the GSWR by R and W Hawthorn between April and August 1855. Little is known about the class which is variously described as having a "dummy crank" or a "crank axle."
Withdrawal
The design was apparently unsuccessful, and all were withdrawn by James Stirling in 1866 and 1867.
Baxter, Bertram (1977). Baxter, David (ed.). British locomotive catalogue 1825-1923, volume 1: General Summary; Index of Locomotive-Owning Companies. Buxton: Moorland Publishing. ISBN0-903485-50-8. LCCN78322204. OCLC60034555. OL4294329M.
Baxter, Bertram (1984). Baxter, David (ed.). British locomotive catalogue 1825-1923, volume 4: Scottish and remaining English Companies in the LMS Group. Buxton: Moorland Publishing. ISBN0-903485-53-2. OCLC59913101. OL25432141M.