The sixth Alpina in-house movement is a tribute to the “bumper” automatic used by the company in the 1950s. Instead of turning 360° like a contemporary rotor, the oscillating weight turned 120° - on both sides a spring sent the mass back in the opposite direction and facilitated the winding of the movement. The contemporary caliber shares the same geometry and inspiration but for two details: the oscillating weight rotates 330° rather than 120° and a blade replaces the traditionally shaped springs. The Caliber AL-709 Is visible through the open case back of the new Alpina Startimer Pilot Manufacture.
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