773.002, one of 10 engines rebuilt by ZOS Zvolen from class 771 heavy shunters, worked train 53562, the 09:02 Zvolen - Vrutky freight, north towards Sliac on the morning of 7 May 2003. The 773s are known as Velky Somar (Big Donkey) by Slovak enthusiasts but can't be seen around Zvolen any more, having been regauged and exiled to the eastern borders where they shunt Ukrainian broad gauge wagons for a living.