The former Bodensee-Toggenburg-Bahn (BT) locomotive Be 4/4 11 (TSI 91 85 4416 011), now owned and operated by Slm Gmbh (Schorno-Locomotiv-Management Gmbh), is on the way from Winterthur to Brugg (AG), pulling two former (SBB) Swiss Post mail cars Z type II. This locmotive was built in 1931 by SLM and SAAS.