European Watch Clock and Jewellery Fair 1973 D 23
A new way to read the time. Based on the binary system, this watch provides both an evaluation of elapsed time and the right time at one single glance a coloured dot in one of the 6 lower apertures gives the hours, the minutes appear in the centre aperture with the date visible in the one above What ’ s more, there is not longer any risk of breaking the crystal (SICURA “Pro Domo”)