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Unused - Seiko Liner Chronometer 46999 AD







When reflecting on early 1960s Seiko Chronometers, one's thoughts naturally gravitate towards iconic models such as the inaugural Grand Seiko, the 3180, or its successor, the 43999/57GS. The realm of consideration may extend to King Seiko timepieces, encompassing the likes of the 44KS, 45KS, and 56KS series, all boasting Chronometer designations. Notably, the Seikomatic Chronometer, initially introduced before being rebranded as the Grand Seiko 62GS sans the Chronometer insignia, might also command attention.


Yet, amid this esteemed lineage, there exists a chronometer of a profound rarity — The 25-jewel Liner '46999' Chronometer, made for a brief span of just over six months, from mid-1963 to early 1964.  Often overlooked, this underdog holds a surprising rarity compared to its Seiko chronometer counterparts.


At the core of the Liner Chronometer lies the 460 movement, representing the pinnacle evolution of the streamlined, high-performance Marvel movement series, which birthed predecessors like the 3140 and 402 variants. This opulent, gold-plated Chronometer caliber showcases a tadpole-style regulator on the balance bridge, ensuring meticulous regulation for the in-house Suwa factory's Chronometer certification. 


In contrast to the 43999 Grand Seiko Chronometer, the Liner 46999 boasts a slimmer profile owing to the thinner Liner movement, unlike the Grand Seiko's taller 3180-derived 430 movement. Nonetheless, parallels between the two are discernible, particularly in the lug design, albeit marginally sleeker on the Liner, aligning with its ethos of slender elegance. Adorning the case back is the distinguished 18k gold Chronometer lion medallion, mirroring the hallmark of Grand Seiko Chronometers.


The dial of the Liner 46999 showcases the elegant Chronometer script reminiscent of the inaugural Grand Seiko 3180, albeit curiously absent in the Grand Seiko 43999. An updated mid-century inspired Seiko Liner logotype adorns the dial, while all variants feature pale silver sunburst dials, distinguished by the AD six-pointed star, indicating plated hour markers.


Originally retailed at ¥20,000 in 1963, the Liner Chronometer positioned itself ¥5,000 below the Grand Seiko 43999, offering a compelling alternative within the esteemed Seiko Chronometer lineage.


Today's offering is a beautiful and unused example of the Liner Chronometer Ref.46999 coming with its original straps, buckle, and box. Whether for its historical significance, craftsmanship, or aesthetic appeal, it's undoubtedly a great addition to any collection.


This Liner Chronometer currently works flawlessly and due to its untouched condition, it will be sold as is. Please let us know if you wish to service it before delivery.


Shipped from Tokyo, Japan

Unused - Seiko Liner Chronometer 46999 AD

  • This Special 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 original silver dial is immaculate with a couple of spots but unnoticeable. The handset and crown are all original and in pristine condition. The original case back and gold medallion are in immaculate shape with the blue protective film. There are no noticeable scratches on the glass.

    The watch comes with its original straps, buckle,  and its original box.

  • BRAND:  Seiko
    MODEL: Liner Chronometer
    REFERENCE: Ref.46999
    DIAL: Original silver dial - AD logo
    CASE MATERIAL: Stainless steel
    CASE DIMENSIONS: 36.0 x 43.0 mm diameter; 9mm thickness, 19mm lug width.
    CRYSTAL: Mineral glass
    CASE BACK: Screw-in Stainless Steel
    MOVEMENT: Hand-wound Cal.460
    Manufacturing date: January 1964
    Service History: Unknown, ±30s/day
    Bracelet/Strap: Original leather straps with the correct Seiko buckle.

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