A scarcer date only Grand Quartz from Seiko, that was always on a leather strap.  Model reference 4842-8041 or QNJ020.


From the serial number on the case back we can accurately date this watch to being made in September 1976.


The 4842-8041 model was the only date only watch in the Grand Seiko range in 1976, and there was just one gold capped version as well.  All the others had the day date movement, so if you prefer the cleaner layout of date only you do not have too many options!  The leather strap is new, and we used the brochure as a guide to try and match it as close to original as possible while using export friendly calf leather rather than real alligator.  The movement was originally rated to +/- 5 seconds a month, and when compared to modern chronometer standards of +4/-6 seconds per day really shows the quality.  Seiko were the main pioneers of Quartz technology, so while the rest of the industry were catching them up Seiko kept innovating.  The case is clean but does have various marks on the flanks.  This could be polished if you wanted, but that is not a service we offer nor recommend – it can only be original once.  The dial is clean and the beveled glass has no chips or scratches.  We will install a brand new battery before sending the watch out to the new owner.

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  38.2 mm

Width without crown  38.2 mm

Between lugs  19 mm

Lug to lug length  41.6 mm

Case Thickness  11.1 mm

All sizes are approximate.

Included with this watch is a 3 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.

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