Covered Hopper Wagon FS Brambles of series Uacs 930 5 001-059 in Chiasso (CH), May 1997. These wagons and Nr 060-087, which have 5 containers and are shorter, were built in 1970-1973 for Ausiliare Milano, which merged into Brambles in 1992. VTG bought the wagons in 2002 and retired them by 2010/2011.
One time on the website www.seetalkroki.ch there was a picture of a car with logo ETRA AG Zürich and reporting marks SBB-CFF. My guess is Etra leased some of these wagons during the 1970s / early 1980s.