The first G10 locomotive came into service in 1910, and was used until 1925. These locomotives were known as G10 and BR57 whilst they were working in Prussia and Germany. 49 of these locomotives which were made by various manufacturers were brought to Türkiye at different dates. The Prussian G10 design has an unusual 0-10-0 wheel layout. This example was manufactured by Borsig in 1912 or 1913 and after service with the KPEV (Royal Prussian Railways) arrived in Turkiye as one of an eventual total of 49 “Class 55” locomotives: it is now numbered 55022. This impressive steam engine is 18.9 metres long and weighs 76 tonnes. L: 37.2 m W: 3.10 m H: 4.50 m