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GP Gyromatic 39J booklet (1957)

December 8 2002 at 8:10 AM

PeterCDE  (Login pc01)

Response to Vintage movements


Here´s a booklet by GP of 1957 explaining their novelty movement, the Gyromatic sporting 39 fully funtional jewels. The function of the Gyromatic drive has been nearly unchanged until the mid 1970´s.

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