Mike-still waiting for my 43411 to arrive. I plan to run it with my red 39421 Re4/4I and a set of Liliput steel coaches.

The Lightsteel coaches were divided into several types.
In the period 1957-1990, there were 1st class (A) coaches, second class coaches (B), mixed class coaches (AB).
There were also variants with compartments rather than open seating and one that included a buffet compartment.
Prior to 1957, some of the AB coaches were operated as 2nd/3rd Class coaches (BC4u)

The difference between the original 2nd Class (B4u) and 3rd Class (C4u) were primarily noticeable in terms of the number of seats per coach and the fact that the C4u had wooden benches rather than cushioned seats. The only Lightsteel coaches with 1st Class service were the AB4u, as a pure 1st Class coach was never built.

I am going to have to do some research to learn more about the earlier use of these coaches, as my period of expertise is post 1965.
Liliput (Bachmann) had a model of an AB where the coach had two doors per side and one half of the coach was 1st Class.
I seem to recall coaches where the 1st Class section was between the door pairs and the extremities were 2nd Class. I wonder if those might have been the original AB4u as opposed to the BC4u which later became AB. I am curious whether these were in fact the coaches that had a compartment section in the middle.

Let me go through my books this weekend and see what I can find out.

Regards

Mike C

The baggage car with postal compartment, as released by Liliput was not equipped for push-pull operation. As far as I remember, neither was the dining car.
The LS A and LSB (4 doors) were equipped with the cables necessary for push-pull operation.

The baggage car that could be used in push-pull operation was the model made by Maerklin and Trix.

If you are running a train with a BDe 4/4 (Hag), that railcar already has a baggage compartment, so there would be no need for one in the coach consist. A baggage car would only be needed in a train pulled by a Re 4/4I.

My recommendation would be to use a pair the second class coaches with the pilot coach and keep the remaining one, the baggage, first class and restaurant car for use with a few EWI or EWII to make a locomotive pulled regional consist from the 1960s/1970s.

Regards

Mike C