The Seikomatic Weekdater is one of Seiko's most iconic series, showcasing its mastery of automatic watch technology in the 1960s. This model, referenced as 6206-8990, is a prestigious "dress watch" designed for the needs of the business world, offering both day and date functions. A top-segment automatic watch of its time, this piece is now an indispensable classic for vintage Seiko collectors.
Case Design and Wrist Comfort
The watch's 37mm stainless steel case offers a remarkably modern and masculine size for its time. The thin bezel makes the dial appear larger, while the short lug ensures a balanced and comfortable fit on the wrist. The crown being hidden at the 4 o'clock position both maintains the symmetry of the case and prevents pressure on the wrist, enhancing wearing comfort. The iconic "Dolphin" logo on the case back is a nostalgic detail highlighting the model's water resistance.
Dial Details and Condition
The silver dial with a sunburst pattern has acquired a slight patina that gains character with age. The date window at 3 o'clock and the fully inscribed day window at 6 o'clock create the dial's characteristic "Weekdater" identity. Applied indices and dauphine-style hands capture light perfectly, maximizing readability. The "Diashock 26 Jewels" inscription at the bottom of the dial points to Seiko's shock-absorbing technology and the quality of the movement.
Technical Specifications and Movement
Movement: High-quality 6206A automatic caliber with 26 jewels.
Case Diameter: Approx. 37 mm.
Functions: Hour, minute, second, date, and day.
Case Material: Stainless steel (SS).
Manufacturing Date: Based on the serial number "5601280" on the case back, this particular watch was manufactured in June 1965.
Style and Usage Recommendation
The Weekdater, with its timeless design, perfectly complements both suits and classic casual wear. The brown leather strap, combined with the silver dial, highlights the watch's vintage character. It's an ideal everyday classic, especially for those who love the "Mad Men" aesthetic of the 1960s.
Final Assessment
This Seikomatic, manufactured in June 1965, possesses collectible value both in its condition and its pristine, gilt-finished movement. The clarity of the dolphin logo and lettering on the case back is a crucial detail, indicating that the watch has not lost its shape through polishing. This 60-year-old Japanese legend is one of the most vivid witnesses to Seiko's golden age of mechanical watchmaking.
The item you are viewing was manufactured in 1965.
Professionally restored and COMPLETELY SERVICED (movement completely disassembled, components cleaned, lubricated and adjusted), your watch will function flawlessly without any surprises. (Requires no maintenance for 3 years unless exposed to direct water or high humidity for extended periods.)
Product Condition: Tested, fully functional and in working order.
