I would suggest Cologne Düsseldorf (or Duisburg) with a connection to the Cologne Aachen (and Duisburg Bochum) route if bought. It should be around the Year 2000-2010 with the S-Bahn X-Wagen+Br 111/Dostos+Br 111 and the Br151 with a freight train. The X-Wagen and the 111 were a typical combination on the route. The Br 143 can also be in front of the X-Wagen. The trains are classical trains, from an older generation and the west German competitors of the DDR Locomotives Br 155 and Br 143. P.S. It would be ideal for long distance journeys with the ICE or IC from Aachen to Bochum with the upcoming Br 101.