
He coats it with enamel powder and then fires it in the furnace at a temperature of between 800° and 1200° Celsius, resulting in a fusion between the enamel and the metal. Only immaculately white plates are selected. The numerals are then transferred and the craftsman responsible for applying the centre and the seconds subdial intervenes. Being careful not to chip the enamel, he carefully cuts out the central part of the dial and the seconds circle, and then welds discs representing tenth of a millimetre depression in order to create a depth effect.