Now available at auction from Second Vintage
This vintage Seikomatic presents a classic silver sunburst dial housed within a streamlined case profile. Distinguished by its recessed crown positioned at 4 o'clock, the design emphasizes the automatic nature of the movement by visually minimizing the winding mechanism, creating a symmetrical and elegant presence on the wrist.
Brand: Seiko
Model: Seikomatic
Reference Number: J14099DE
Movement: Automatic, Caliber 603
Dial: Silver sunburst with applied gold-tone indices
Case Size: 35 mm (excluding the crown)
Case Material: Gold-plated
Production Year: 1960s
Condition: Good vintage condition. Timegrapher: +28s+30s/day, running strong and steady.
Dial and Hands
The watch features a well-preserved and attractive silver dial with a clean sunburst finish. The applied gold-tone indices remain in excellent shape, providing a sharp contrast against the silver background. Crisp printing is maintained throughout the dial, prominently displaying "DIASHOCK 17 JEWELS" with no significant loss or staining. The gold-tone dauphine hands exhibit honest aging consistent with the watch's era, showing light oxidation and minor spotting visible under magnification.
Case and Crystal
The gold-plated case is heavily worn, showing significant plating degradation. There is noticeable plating loss on the lugs and case edges, alongside moderate scratches throughout the case flanks. Corrosion and pitting are visible on the rear edges of the case. The integrated smooth bezel shows scratches and noticeable plating wear along its periphery. A recessed crown is positioned at 4 o'clock, which also shows some plating wear, keeping the case profile sleek. The domed acrylic crystal remains clear with no major cracks or chips, though some light surface scratches are visible at certain angles.
Movement
Powering the watch is the automatic Seikosha caliber 603. The movement appears relatively clean, featuring engravings that read "SEIKOMATIC 20 JEWELS", "SEIKOSHA", and "603". There are some light scratches present on the rotor. The rotor is stamped 20 jewels, which conflicts with the 17 jewels printed on the dial, indicating a parts mismatch. Measuring +28s+30s/day on the timegrapher. Performing well within expected vintage tolerances; running strong and steady.
Strap
The watch is paired with a complementary black leather strap featuring contrast stitching. The strap shows light wear and creasing, providing a comfortable and traditional aesthetic.
Condition
Good vintage condition. The dial is the clear highlight, remaining exceptionally clean with well-preserved indices and crisp printing. The case exhibits heavy wear, with significant plating loss on the lugs and edges, moderate scratches on the flanks, and pitting on the rear edges. The hands show light, honest oxidation. The acrylic crystal has mild surface scratches, and the smooth bezel displays noticeable plating wear. The movement is relatively clean but features a rotor that does not match the jewel count printed on the dial. Supported by the timegrapher result, the watch is running strong and steady.
Dimensions
The case measures 35 mm (excluding the crown).
Remarks
This Seikomatic offers an extremely clean and attractive sunburst dial paired with the classic, streamlined 4 o'clock crown case design. While the case shows heavy wear and the movement features a parts mismatch, the strong dial presentation and steady mechanical performance make it a charming vintage wearer.
History
The Seikomatic line was introduced in the early 1960s as a premium automatic offering from Seiko, showcasing the brand's advancements in self-winding technology. The recessed crown at 4 o'clock became a signature design element for these models, emphasizing that the watch did not require daily manual winding. The Seikosha caliber 603 is a reliable automatic movement characteristic of Seiko's robust engineering during this period, built to provide dependable daily performance.
/ Second Vintage
SKU: SEI-MDJ-0006













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Seiko - Seikomatic - No reserve price - J14099DE - Men - 1960-1969
Seiko
Solgt for
175 USD
Solgt den 26. juli 2026
19 bids48 watching
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