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    Hamilton Rare Model 507 Calendar Electric, One of 25, Not Marketed
    Case: stainless steel, polished and brushed, 34 mm
    Dial: silver, sloped edge, black indexes and minute marks, matte black broad baton hands, red arrow seconds hands, shutter date aperture with red numerals
    Movement: model 507, electric
    Band: Hamilton leather strap and steel buckle

    Note: This rare timepiece from the René Rondeau collection is one of only 25 reportedly made. The refined Model 507 calendar movement was introduced in 1956 and 1966. It retained the continuously rotating date ring and spring loaded shutter of the 505C, but to solve the indexing inconsistency the shutter was operated by a cam rather than being linked to the date ring itself. An intermediate stem position was created to allow the date wheel to be advanced separately from the hands. Five prototypes were made in 1966, and production was slated to start in March of 1967. The company's new president, Richard Blakinger, was enthusiastic about the watch but the Committee was not convinced there was a market for it. Fears that a more complicated watch would result in even greater servicing problems and concerns about the thicker, bulky case led to the termination of the project. This timepiece is featured on page 92 of the book "The Watch of the Future".

    Condition Report*: Type: Hamilton Rare Model 507 Calendar Electric, One of 25, Not Marketed
    Dial: silver, sloped, black indexes
    Hands; matte black
    Metal: stainless steel
    Case Info: polished and brushed finish
    Case Width: 34 mm
    Crystal: acrylic
    Watch Movement: model 507, electric
    Band: leather, steel Hamilton buckle
    Circa: 1965
    Condition: dial is superb, case is sharp and choice, movement good but non-running, battery has been removed
    *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
    October, 2015
    29th Thursday
    Bids + Registered Phone Bidders: 10
    Lot Tracking Activity: N/A
    Page Views: 1,035

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