The Leichtstahlwagen were a coach series of the Schweizerische Bundesbahnen (SBB). With weights varying from 25 to 30 metric tons this rolling stock built the SBB public image from the 30’s until well into the 90’s of the previous century. Within the series no less than more than 1000 units have been produced. For the TS 2018 conversion of these coaches we used the SBB-publication ‘SBB Reisezug und Gepäckwagen/Voitures et Fourgons CFF’ (1975 edition).
More information can be found on the internet, e.g.:
This add-on pack contains various variants of the LS A (first class), LS AB (mixed first/second class), LS B (second class) and LS D (Gepäckwagen).