Big Date

In big date display movements, the date is displayed in large numerals on two separate discs. For the dis-play of the date, one of the discs carries the units, while the other carries the tens. A two-disc system allows the use of larger numerals, thereby enhancing the legibility of the date. In the case of the Eterna 3030, an outer disc carries the unit numbers for every day of the month. A small disc, arranged further inside, carries the four necessary digits for the tens display. The Eterna calibre 3030 shows a convex profile on both sides, in the form of a lens. The two discs of the date display blend seamlessly into the cambered surface of the movement. They are designed, not as a conventional arrangement of two flat and horizontal discs posi-tioned one above the other, but as two cambered rings, which rotate next to each other.