Calibre 62 is the latest in a long-produced family of 10.5 ligne watch movements from Minerva. It was previously known with Calibre numbers 48, 49, and 50.
Introduced in 1943 and designed by Minerva's Andres Frey, Calibre 48 attempted to incorporate Pythagorus' golden mean into the design of the bridges. This distinctive design became famous, and the movement gave its name to the watch containing it, the Minerva Pythagore. The circular movement is divided into 45- and 90-degree angles for the bridges.
Calibre 48 was a 10.5 ligne diameter movement (23.6 mm) and was 3.8 mm high. It featured 17 jewels and had a power reserve of 45 hours at 18,000 A/h.
Calibre 49 was a indirect central seconds variant of Cal. 48. It shared that calibre's 10.5 ligne case but was 4.5 mm high.
Calibre 50 was introduced in 1945 and included a date indicator hand rather than central seconds.
On taking control of Minerva from the Frey family in 2000, the Minerva technical staff concluded that, although the old calibre design was still usable, it could not be produced with modern equipment. For this reason, the calibre was scanned and reconstructed in CAD for modern CNC machining.
Calibre 62-00 is a modern reworking of the classic Calibre 48. It is a hand winding movement with hour and minute and small seconds. The modern version features redone hand-finished bridges with a classic-looking design, gold ruby châtons, and a côtes soleil pattern on the crown wheel and barrel wheel. Cal 62 has a diameter of 24.0 mm, a height of 3.9 mm and is made from 162 handfinished parts. It has a 50 hour power reserve, is adjusted in 5 positions, and has 19 jewels.