I have just come across the following Train pairs, these were mainly composed of Liegewagen and Schlafwagen.
1964/65 to 1966/67:
F 411 Mailand - Zürich - Basel Bad - Frankfurt/M
F 412 Frankfurt/M - Basel Bad - Zürich - Mailand
Which had a number change in 1968 to F 98/ F 99 with loss of service in 1970.
I am looking for the zugbildungsplan for the first period.
Any information would be greatly appreciated.