Germany-Berlin 9N316-9N325, control number

Germany-Berlin 9N316-9N325 with black control number, MNH. Michel 402ARa-411ARa, 453Ra, Euros 47.40. Accident prevention 1971-1973. Matches cause fires; Broken ladder; Hand and circular saw; Alcohol and automobile; Safety helmets prevent injury; Defective plug; Nail sticking from board; Traffic safety-ball rolling before car; Hoisted cargo; Fenced-in open manhole.