VR Class Hr1
 Hr1 class (original classification P1) was the largest passenger express steam locomotive built in Finland. Twenty-two were built between the years 1937–1957. They were numbered 1000-1021In the thirties there was a need for faster and heavier express trains in Finland and the Hv1 - Hv3 classes were not powerful enough to fill the need. Lokomo Oy in Tampere built first two prototypes and after successful trials 20 more were built.