The Vk4 was also a class of only two locomotives, built by Borsig Lokomotiv Werke (AEG) of Germany in 1910. The Vk4s were used at a fortress, and were eventually also used in dismantling the fortress, after which one locomotive went into industrial use and was scrapped in 1951. The other was sold to the Finnish Railways and nicknamed "Leena". It became No. 68 and is now the oldest working broad gauge locomotive in Finland, being preserved at the Finnish Railway Museum.