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Rolex Ref 6556 Tru-Beat

 

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Brought my Rolex Reference 6556 Tru-Beat circa 1955 out to play today.

"An exceptionally rare Rolex model, the Tru-Beat reference 6556 was launched in 1954 as a tool watch for doctors and healthcare workers.

It’s the only mechanical Rolex model to ever incorporate a "dead-beat" seconds mechanism that advances the seconds hand only once per second. This permitted more accurate readings of patients' pulse rates, however the demand for such a timepiece was quite low, and the reference was soon discontinued. Amongst the small quantities produced, few have survived with the dead-beat mechanism of the Rolex caliber 1040 still intact."- Phillips Auction House

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