This is one of only two survivors of this class, and the only one in mainline running condition. Thirty members of this class were built. These locomotives were designed mainly for suburban workings but because of their high tractive effort they were also used on steeper sections of line hauling passenger or freight trains. In particular between Dunedin and Oamaru and between Taihape and Taumarunui. This class of locomotive is capable of higher speeds than that mentioned in the table, however this is restricted by current regulations, to 70km/h in a forward direction and 40km/h whilst running bunker first. This locomotive was sold to the Ohai Railway Board for hauling coal trains in 1955. In 1967, it was “released” to the NZ Railway and Locomotive Society along with X442 for display at Ferrymead Historic Park in Christchurch. Due to storage and delays along the way, it did not reach Ferrymead until 1978. In 1997, it was leased to the F&DSRS on a 25-year ‘heritage’ lease for restoration to mainline operation.