I went through some of my back issues of MIBA (Model Railroad mag from Germany) to see if there was anything of help, all I could find for express trains was a special on an all coach train.
However, this MIBA Special may be of help:
http://www.miba.de/verlag/15087237.htm
However, this MIBA Special may be of help:
http://www.miba.de/verlag/15087237.htm