Old 2-phase meter Landis&Gyr from Switzerland. «Eigentum Gemeinde» means "property of town" Two phase service in that time means not the american way of 3-wire service with 115 volts to neutral and 230 volts from hot to hot wire. Here it means 2 phases from a 3-phase system and neutral: 230 volts to neutral and 400 volts phase to phase, which was common that time (1920ies) in Switzerland, southern Germany.