The Finnish VR Class Tk3 (original classification 'K5') was a 2-8-0 light freight locomotive. It was the most numerous steam locomotive class in Finland with 161 built. 100 locomotives were constructed between 1927 and 1930, with a further 61 ordered and constructed 1943–53. They were numbered 800–899, 1100–1118, and 1129–1170. The livery of Tk3 was the same as other VR steam locomotives: dark locomotive green with a black smokebox. When new some locos were lined with thin gold decoration. The gold decorations were not repainted during maintenance, so they were seldom seen.