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Grand Seiko 56GS 5646-7005 18K linen dial







The 56GS series of vintage Grand Seiko stands out as a pinnacle of diversity, second only to the 61GS line. Aside from boasting 35 different models, it shines its inclusion of all three complication versions: the 5641A (no-date), 5645A (date), and 5646A (day-date) movements. 


Crafted exclusively in 18YG yellow gold, the distinctive C-shaped 7005 served as the flagship not only of the 56GS series but also of the entire Grand Seiko line-up during the Shōwa era, commanding the highest retail price.


Upon its release, the 5646-7005 offered the choice of leather straps or a scarce 18K yellow gold bracelet, with a price tag of JPY 500,000 or approximately JPY 1,700,000 as of today. And truly, once you hold this masterpiece in your hands, its worth becomes undeniable: The C case's edges feature a matte hairline finish, enhancing the sleekness of the mirror-polished bezel. The dial definitely steals the spotlight with its white waffle pattern, which often develops a charming yellow hue as it ages. The bar hour markers contrast sharply against the slender pencil handset, perfectly complementing the raised "SEIKO" and "GS" logos, as well as the golden day/date frame at 3 o'clock.


Making this example stand out is the case material and the incredibly crisp condition. Most likely unused as it retains its original sticker on the case-back, it also comes with its original Hinomaru-stamped 18YG buckle and original box making it a treat for the eyes. We paired this 56GS with a nice and slim crocodile black leather strap that allows the watch to be worn close to the wrist – just as intended.


Shipped from Tokyo, Japan

Grand Seiko 56GS 5646-7005 18K linen dial

  • This 56GS is in immaculate condition. The case retains its factory-sharp edges with no visible bumps. Expect very light scratches on the case due to storage.

    The linen dial is immaculate and retains its original white color. The handset and crown are all original and in pristine condition. The original case back is in immaculate shape with the blue protective film. There are no noticeable scratches on the glass.

    The watch is paired with a set of black crocodile straps, its original 18K stamped GS buckle,  and its original box.

  • BRAND:  Grand Seiko
    MODEL: 56GS
    REFERENCE: Ref.5646-7005
    DIAL: Original white linen dial
    CASE MATERIAL: 18K Yellow gold
    CASE DIMENSIONS: 35.0 x 40.0 mm diameter; 10mm thickness, 19mm lug width.
    CRYSTAL: Mineral glass
    CASE BACK: Screw-in Stainless Steel
    MOVEMENT: Hand-wound Cal.5646A
    Manufacturing date: March 1973
    Service History: Serviced, +1s/day
    Bracelet/Strap: Black crocodile leather straps with the correct 18K YG buckle.

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