1971 - 1973, permanent issue prevention of accidents, interesting coil stamps inventory in the stockbook. Included are single stamps, strip of five, and in addition to it a few EZM from Roll beginning, as well the black and the coloured counting numbers in red, blue and green, in each case pending 1, 50 DM - key value, partitioned to the roll sizes to 200 / 300 / 500 stamps with the three-digit counting numbers and 1000 with the four place counting numbers.