Here is a Passenger Coach in TT 120 Scale by Tillig of Germany

It is catalogue number 01068

This is a three cars set representing the Leipzig to Koln train from Epoch III

3tlg #1  Reisezugwagen

3tlg #2  Reisezugwagen

3tlg #3  Schlafwagen  MITROPA

They have been used slightly but are in excellent condition, no couplings are fitted but included are a pair of standard coupling plus a pair of magnetic ones for each car

Not easy to find