The Junghans 670/5 corresponds to the caliber PUW 73.
Movement imprint 670/5: 18.000 A/h
Movement imprint 670/6: 21.600 A/h
Movement 670.05 has a normal movement
Movement 670.06 is equipped with a higher movement
670.05 PUW 73
670.60 PUW 1075
670.61 PUW 1075
670.06 Minutenrohr-Höhe 2,55 mm
670.61 Stundenrad-Höhe 1,50 mm