Worth a close look is the new Calibre De Bethune 2105s, which pushes the research into balances by Denis Flageollet even further. His goal: To create the lightest-weight balance possible with the highest inertia. For the regulating organ of this new calibre, whose efficiency is 120 per cent of the watch standard according to Denis Flageollet, the watchmaker has constructed a balance composed of a silicon disc encircled by a ring of platinum. Connected to a spring with a De Bethune curve assembled in one plane in order to have perfect centring of the coils, shock absorption, and reduced thickness, the vibrating ensemble attains superior isochronism. This 30-mm, manual-winding calibre beats at 28,800 vibrations per hour, and has a power reserve of six days, as well as a precise spherical moon phase display.
Three versions are available. Version 1 features a movement with reversed CÔtes de Genève decoration, hand drawn and chamfered steel, a power reserve indicator in a window on the side of the movement in line with the balance, and a spherical moon phase display at 12 o’clock on the dial. Version 2 features an anti-magnetic hardened steel movement that has been completely polished, a power reserve indicator in a window on the side of the movement in line with the balance, and a spherical moon phase display at 12 o’clock on the dial. Version 3 features a movement with reversed Cätes de Genève decoration, hand drawn and chamfered steel, a power reserve indicator by a retractable hand at 6 o’clock, and a spherical moon phase display at 12 o’clock on the dial.
This is definitely worth the trip without delay.




Source: Europa Star December-January 2010 Magazine Issue