Upvote:2
goods wagoons ? or passenger cars ? SBB acquired Leichtstahlwagen in the 30s which then basically made how SBB looked the next 50 years.
German language wiki about Leichtstahlwagen
Someone has this site: Bahnbilder von Max
Because the line definitely had a lot of cross-Europe traffic : so almost any european guterwagen which was certified to go to foreign countries. Berne gauge to begin with.
In the case of SJ (Swedish State railway), a small number of types were not allowed to run abroad.
Railvetica Die Historischen Umbau Stahlwagen
SBB built the Be 4/6 as its passenger locomotive for the Gotthard bahn look at https://de.wikipedia.org/wiki/SBB_Be_/6_12303-12342