Accompanying the ordering of A3 class locomotives from Dübs in 1868 was an order for the Helsinki railway workshops to construct two identical engines, the object being to bring locomotive building skills and experience to Finland. These two engines were constructed between other workshop tasks as and when the opportunity arose, so they were not completed until 1874 and 1875. Numbered 57 and 58, and later classified A5 in 1885, the former had the distinction of being the very first Finnish-built locomotive. However, the construction costs proved so astronomical that further locomotive building endeavours were delayed for more than a decade.
When it was new, locomotive number 58 was on display at the industrial exhibition of Kaivopuisto, Helsinki, where it was transported on a temporary track, moving portions of track from behind the engine to the front. At the exhibition, Emperor Alexander II gave the locomotive a silver medal as well as a honorary diploma to commemorate this high quality product of the Finnish metal industry.
Structurally the A5 class was identical to the A3 class. The ‘ship’s rail’ was common to most early Finnish locomotive types. The A5 class were built as wood burners but no. 58 was twice converted for periods of coal burning. Originally, the screw brake in the tender was the only means of braking, but a steam brake was also fitted later. An air brake and train heating equipment were installed at the beginning of the 20th century.
A5 class nos. 57 and 58 were allocated to Helsinki shed until 1909 and 1907 respectively for handling passenger trains in southern Finland. The emergence of newer, more powerful locomotives later demoted them to local stopping services and light passenger duties, and they spent short periods at Karjaa, Riihimäki, Hanko, Lahti, Viipuri, Tampere and Turku. No. 58 was also used during two railway construction schemes.