Offering a Marklin HO SK800 Steam Engine - Version # 17 - from 1956. This SK800 has been painted to replicate the SK800 Steam Engine - Version # 19 - From 1959. The 1959 Version can be seen in the included picture from the Koll's Catalogue.The SK800 has been oiled and tested for (forward/reverse/light function). This engine requires two pulses from a Marklin Transformer to change direction of travel.