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    Description

    Rolex, Rare Modified Ref. 6556 Tru-Beat Precision, Stainless Steel, Automatic, Circa 1961
    Case: 34 mm, stainless steel, three body, with screw-down crown and bezel, stamped II.61, No. 731877
    Dial: sunburst silver, with outer minute track, and applied raised and segmented stainless baton markers; stainless sword hour/minute hands, with early Tru-Beat arrow-tipped sword sweep seconds hand
    Movement: Rolex caliber 1040 automatic, 26 jewels, Swiss lever, adjusted to five positions plus temperature, with "butterfly" rotor and rhodium finish, converted to standard sweeping center seconds, No. N919788
    Band: none
    Signed: Rolex on dial, case, crown, and movement

    Named for its quartz-like, once-per-second tick, Rolex's Tru-Beat was marketed to medical professionals, and promised to make reading a patient's pulse easier. Few were produced. This is among the rare Precision versions that do not include "Tru-Beat" on the dial, and, typically, was at some point converted to conventional sweeping seconds.


    Condition Report*: Type: Rolex, Rare Modified Ref. 6556 Tru-Beat Precision, Stainless Steel, Automatic, Circa 1961
    Signed: Rolex on dial, case, crown, and movement
    Model: Tru-Beat Precision, Ref. 6556
    Dial: sunburst silver, with outer minute track, and applied raised and segmented stainless baton markers
    Hands: stainless sword hour/minute hands, with early Tru-Beat arrow-tipped sword sweep seconds hand
    Metal: stainless steel
    Case: #731877
    Case Info: three body, with screw-down crown and bezel, stamped II.61
    Case Width: 34 mm
    Crystal: acrylic
    Watch Movement: Rolex caliber 1040 automatic, 26 jewels, Swiss lever, adjusted to five positions plus temperature, with "butterfly" rotor and rhodium finish, converted to standard sweeping center seconds, No. N919788
    Band: none
    Circa: 1961
    Condition: Very good, unblemished dial. Good case, polished, with functioning screw-down crown, undamaged case-back knurling, and signs of daily wear. Note that reference number between lugs shows second "6" to be factory-stamped over "8." Running, but service is recommended.
    *Heritage Auctions strongly encourages in-person inspection of items by the bidder. Statements by Heritage regarding the condition of objects are for guidance only and should not be relied upon as statements of fact, and do not constitute a representation, warranty, or assumption of liability by Heritage. All lots offered are sold "AS IS".

    Auction Info

    Auction Dates
    June, 2019
    3rd Monday
    Bids + Registered Phone Bidders: 5
    Lot Tracking Activity: N/A
    Page Views: 595

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