With one of the best blue dials we have seen, this Seiko SQ also comes on the original full length bracelet. Model reference 7123-8430


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


The 7123 quartz movement was launched in 1978, just nine years since Seiko launched the world’s first commercially available quartz regulated watch. It made the accurate quartz technology available to everyone, and with quick set day and date (the day can be in English or French, indicating this was always designed for the export market). But all of that is background, as we think the buyer of this watch will love the dial and everything else is a bonus! Please do watch the video, as that shows how the dial works better than anything else. Everything is working correctly, and we will install a brand new battery before sending the watch out to the new owner. The original bracelet is full length, and while it has some stretched links is still a rare survivor. The case has some dings, and the acrylic crystal has been polished to remove most scratches.

This watch will be supplied with our branded 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 birthyearwatches.com and should not be used without permission.


Width with crown 35.8 mm

Width without crown 34.7 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 215 mm. 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 2 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.

From 1st September 2021 we will be planting a tree for every watch we sell, working with the International Tree Foundation (Est 1922) to make this business positive on carbon. By buying anything pre owned you are effectively reusing what already exists, but this takes it further and makes us feel good.

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