This is one of the original Tigers of s.Pz.Abt.503. It was originally commanded by Leutnant Detlef von Koerber, whose journal covering January 1943 is published. This Tiger had a turret side hatch. In Spring 1943 it was renumbered from White 131 to Black 123. Later, it was given another turret taken from another Tiger, Black 113. This turret was an older one with 2 pistol ports. The number 123 was then painted onto the replacement turret.