Presented for auction by Second Vintage
A highly attractive example of a classic vintage Seiko day-date, this Seikomatic Weekdater is distinguished by its beautifully preserved silver sunburst dial and its distinctive 6 o'clock day window configuration. Finding these early day-date models with such an exceptionally clean dial makes this a compelling opportunity for enthusiasts of 1960s Japanese design.
Brand: Seiko
Model: Seikomatic Weekdater
Reference Number: 6206-8040
Serial Number: 5002523
Movement: 26-jewel automatic
Dial: Silver sunburst with day and date displays
Case Size: 36 mm (excluding the crown)
Case Material: Stainless Steel
Production Year: 1965
Condition: Excellent vintage condition. Timegrapher: -12-15s/day, performing remarkably well.
Dial and Hands
The silver sunburst dial is exceptionally clean and well-preserved, showing a bright, radiant finish. The layout is defined by the distinctive day window positioned at 6 o'clock, which features pleasing blue text for Saturday, balanced by the date aperture at 3 o'clock. Applied faceted indices are bright and clean, complementing the crisp black typography printed across the dial surface. The dial shows no visible staining, spotting, or moisture damage. A set of silver-tone dauphine hands sweeps across the dial, remaining well preserved with clean surfaces and no obvious oxidation or corrosion.
Case and Crystal
The stainless steel case features a polished finish and displays honest wear consistent with its age. There are light to moderate surface scratches present throughout, along with minor dings and wear visible on the lugs and case flanks. The smooth steel bezel frames the dial nicely, exhibiting light surface scratches consistent with the rest of the case. Positioned neatly at 4 o'clock is the recessed crown, which remains unsigned as is typical for this model. The domed acrylic crystal is clear, showing no major scratches, cracks, or crazing. On the reverse, the caseback engravings remain clear and legible.
Movement
Inside the watch is a gold-colored 26-jewel automatic movement. The plates and rotor present a clean appearance, showing no visible corrosion or heavy staining, and the screw heads appear in good condition. The movement features crisp Seiko and jewel count engravings. Measuring -12-15s/day on the timegrapher, the caliber is exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece.
Strap
The watch is fitted with a black leather strap featuring white contrast stitching. This casual pairing is in good condition, complementing the sharp aesthetics of the dial.
Condition
Excellent vintage condition. The dial and hands are exceptionally well-preserved, standing out for their lack of visible aging or moisture damage. The stainless steel case displays honest wear, with light to moderate surface scratches and minor dings along the lugs and flanks that remain consistent with a watch from 1965. The acrylic crystal is clear, and the movement is clean. Supported by the strong timegrapher results, the watch is performing remarkably well mechanically.
Dimensions
The case measures 36 mm (excluding the crown).
Remarks
This Seikomatic Weekdater stands out due to its highly preserved silver sunburst dial and the engaging 6 o'clock day display. The combination of strong mechanical performance and honest character makes it a highly attractive vintage Seiko.
History
The Seikomatic Weekdater line represents a highly successful era of Seiko's mid-century production, introducing accessible and reliable day-date functionality to the market. The distinctive layout, with the day prominently displayed at the bottom of the dial, became a recognizable design signature for the brand during the 1960s. These models are appreciated by enthusiasts today for their clean proportions, dependable automatic calibers, and classic mid-century Japanese aesthetics.
/ Second Vintage
SKU: SEIIOOBST0000












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Seiko - Seikomatic Weekdater - No reserve price - 6206-8040 - Men - 1965
Seiko • 1965
Auction Ended
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