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Timepiece provided with open dial plate

Image Number 8 for United States Patent #7420885.

A watch with a clockwork comprising a ringer whose actuation is controlled from outside the watch by means of a control unit, a dial plate comprising an opening, a shutter (10) movable between a first position covering the opening and a second position leaving the opening free. The control unit (12) is arranged in such a way that it enables the shutter to be moved from the first position to the second position when the ringer is actuated.

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