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The First Generation King Seiko. Manufactured in the early 1960s at the Suwa Seikosha factory, this piece represents Seiko's initial, high-stakes move to challenge the dominance of Swiss luxury chronometers. What truly defines this elite collectible is the internal competition it represents; it was designed to prove that Suwa could produce a watch every bit as King as the offerings from their Daini Seikosha rivals.
The architecture is quintessentially mid-century luxury, utilizing a 14K Gold Filled case that provides a deep, warm luster far superior to standard plating. The sunburst champagne dial features the iconic mountain style hands and broad, multi-faceted indices that catch the light with every wrist movement. Flipping the watch over reveals the legendary Gold Shield Medallion deeply embossed on the case back, a definitive mark of its Japanese Domestic Market (JDM) heritage and its status as a top-tier instrument for professionals.
| Feature | Specification |
| Brand | King Seiko 4402 - 8000 |
| Model | First Generation Diashock |
| REFERENCE | J4145 |
| YEAR | Circa 1961–1963 Japan JDM |
| MATERIAL | 14K Gold Filled |
| WINDING | 25-Jewel Manual Mechanical |
| CALIBER | KS 25 Jewels |
| MEDALLION | Original Gold Shield Intact |
| SKU | H1198 |
| CASE SIZE | Approx. 35mm |
| LUG WIDTH | 18mm |
| BRACELET SIZE | Approx. 19.5cm (7.7 inches) |
| SERVICE | Movement Inspected & Winding Smooth |
| STRAP | Leather |
Ships within 48 hours · Estimated delivery Jun 21 - Jun 26
US$40
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