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SOLD - Grand Seiko 56GS 5646-7040






The 56GS line-up was the last mechanical series from Grand Seiko, mass-produced from 1970 to 1974 in a wide variety of models. The production process of the 56GS series was partially automated and used the 5646 28,800bph movement, which provided the right balance of accuracy and reliability. Grand Seiko had previously introduced higher precision models, with a movement speed of 36,000bph, but such high frequency can come at the expense of reliability.

Today we have to offer one of the rarest models from the 56GS series, the 5646-7040. Most likely made for only one month in June 1973, it is the only 56GS model that features Arabic numerals on the dial. Featuring unique textured finishes on both the dial and bezel, finding an example in good condition is challenging. This model is unique since it doesn't follow the Grammar of Design philosophy, and that’s exactly what makes it so special.

This timepiece presents a very rare opportunity for collectors to acquire an extremely rare and unique example of this particular reference.

The watch has been recently serviced by our watchmaker.

Ships from Tokyo, Japan

SOLD - Grand Seiko 56GS 5646-7040

  • This Grand Seiko is in excellent condition. The watch seems unpolished and has light scratches around the case with no bumps or dents observed

    The silver dial and the Arabic numerals are very clean with no signs of deterioration. The handset and crown are all original and in pristine condition. The caseback is well preserved and the original gold medallion is in fantastic shape.

    There are no visible scratches on the glass.

  • BRAND:  Grand Seiko
    MODEL: 56GS
    REFERENCE: 5646-7040
    DIAL: Original silver dial
    CASE MATERIAL: Stainless Steel
    CASE DIMENSIONS: 40mm  x 35mm diameter; 10mm thickness, 18mm lug width
    CRYSTAL: Mineral Crystal
    CASE BACK: Screw-in Stainless Steel
    MOVEMENT: 5646A Automatic
    Manufacturing date: June 1973
    Service History: Serviced, +5s/day
    Bracelet/Strap: Black leather strap with the original Grand Seiko Buckle.

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