This Seiko SQ was sold in high numbers, and many survive – testament to their quality. Model reference 7123-8430.


From the serial number on the case back we can accurately date this watch to being made in June 1981.


In 1981 quartz was undisputedly king of mainstream watches, and Seiko were the pioneers in this technology (they launched the very first quartz watch in 1969, had the most accurate quartz movements in the Grand and Superior ranges, and continue to lead the way now with GPS watches). Now they are popular again, as people recognise the stainless steel cases have lasted well and the reliable movements make an excellent vintage grab and go piece. The bracelets are not always still with the watches, but this one is. The bracelet has been cleaned in our ultrasonic bath, which we would say is essential for any folded link bracelet to ensure it is clean – the dirt finds every nook and cranny. The movement works perfectly and has a quick set day and date, and the date wheel is in English and French. We will install a brand new battery before sending the watch out to the new owner.

This watch will be supplied with the original presentation box and our Certificate of Authenticity.

Please see the HD video for more detail. All photos and videos are part of the description and are of the actual watch unless mentioned. We do not photoshop any pictures, and the images are copyright of and should not be used without permission.


Width with crown 35.7 mm

Width without crown 34.6 mm

Between lugs 18 mm

Lug to lug length 41.1 mm

Case Thickness 9.4 mm

Bracelet will fit a maximum wrist size of 204 mm as pictured, and we have two extra links that can be fitted. The bracelet can be sized for you if you give us your wrist size when placing the order.

All sizes are approximate.

Included with this watch is a 1 month guarantee and free delivery to UK addresses. If you live outside the UK we can still deliver to most countries. Please see our Worldwide Shipping information, or Contact Us. Payment can be made by most credit or debit cards, bank transfer or PayPal. Model reference 7123-8430

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