Dual power locomotive Gem 4/4 # 122 of "La Traction", built in 1916 as electric baggage railcar for the Elektrische Solothurn-Bern Bahn (ESB) by SWS and MFO, fitted with an aditional diesel motor and generator in 1973, running for "La Traction" since 1996. This vehicle is very seldom seen with a passenger train.