




Seiko SQ, Ref. 8C23-8000, Cal. 8C23, Men’s Quartz Analog Vintage Watch, 1985
Seiko SQ Ref. 8C23-8000 (1985), quartz Cal. 8C23. 35.0 mm. Silver-White Textured; case stainless steel. Fully serviced, 12 months warranty.
Seiko SQ 1985 — First impression - 8C23-8000
Seiko SQ - Silver Textured Dial
The Seiko SQ 8C23-8000 presents a finely executed silver-white dial with a subtle vertical texture, bringing depth and sophistication to its minimalist design. Applied baton hour markers and a framed day-date aperture at 3 o’clock offer both functionality and balance. The bilingual day wheel, displaying German (“DIE”) and English, is a notable feature that adds cultural versatility to this Seiko vintage watch with German-English day display.
SQ 8C23-8000 - Hands
This model is fitted with slim, polished baton hands complemented by a central seconds hand, ensuring optimal legibility against the dial’s vertical grain. The clean geometry of the hands aligns with Seiko’s mid-1980s design ethos, merging modern precision with understated elegance.
Seiko SQ 8C23-8000 - Integrated Stainless Steel Case
SQ 8C23-8000 - Crown
The polished crown, positioned at 3 o’clock, remains original to the watch, featuring Seiko’s minimalist approach without external logos or fluting. It sits flush with the case, maintaining the sleek integrated profile of the SQ series.
Seiko SQ - Integrated Stainless Steel Bracelet
Completing the seamless aesthetic is the original integrated stainless steel bracelet, reference code B234B on the endlink, composed of wide, rounded links with a satin finish. The secure folding clasp bears the Seiko signature, reinforcing authenticity and the integrated case-bracelet design language.
Seiko SQ 8C23-8000 - Cal. 8C23 Quartz Movement
At the heart of this model is Seiko’s Caliber 8C23, a high-precision quartz movement from the brand’s golden era of Japanese horology. Renowned for its accuracy and reliability, the 8C23 was engineered with long-term performance in mind, offering quickset day and date adjustments alongside low-maintenance operation. Its presence in the SQ line cemented Seiko’s dominance in the global quartz watch market during the 1980s.
Heritage of the Seiko SQ in 1980s Japanese Design
The Seiko SQ range was a flagship quartz series that bridged the gap between dress elegance and modern technology. During the 1980s, Seiko’s design language shifted towards integrated case-bracelet forms and clean dial layouts, making models like the 8C23-8000 representative of the era’s forward-looking horology. Collectors today appreciate its restrained proportions and versatile styling, suitable for both formal and casual occasions.
Seiko SQ — Condition, Originality, and Worldwide Shipping
This timepiece is in excellent vintage condition, retaining all original components including the case, dial, hands, crown, and bracelet. Fully serviced and in full working order, it is offered with a 12-month warranty. As with all our pieces, global insured shipping is available, ensuring safe delivery to collectors worldwide. It also appears in our Quartz Analog Vintage Watches collection with integrated bracelet design.
| Brand | Seiko |
| Model | SQ |
| Reference | 8C23-8000 |
| Condition | Used |
| Gender | Men's |
| Caliber | 8C23 |
| Category | Men's Vintage Watch |
| Production Year | 1985 |
| Dial Color | Silver-White Textured |
| Case Diameter | 35.0 mm |
| Case Material | Stainless Steel |
| Movement Type | Quartz |
| Fully Serviced | Yes |
| Fully Operational | Yes |
| Original Watch Components | Yes |
| Warranty | 12 Months |
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FAQ: Seiko SQ, Ref. 8C23-8000, Cal. 8C23, Men’s Quartz Analog Vintage…
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Are all components of this Seiko original?
All visible components — including the dial, hands, crown, and case — are original unless otherwise clearly stated in the listing.
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Which movement caliber is inside this Seiko?
The exact Seiko caliber is listed under technical specifications.
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Are vintage watches waterproof?
No, unless otherwise noted, vintage watches are not guaranteed to be water-resistant.
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Do you offer local pickup?
Yes, local pickup is available in Belgrade by appointment.
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Where was this Seiko manufactured?
Seiko is a Japanese brand; production for lines like 7009/7S26 was in Japan and other Asian facilities. This model is not Swiss-made.





