The best Ultra-Chron in the World?  Possibly, especially as it has just had an expensive full service by Longines.  Model reference 8360.


From the serial number on the case back we can accurately date this watch to being made in 1968.


The Ultra-Chron range were designed from the outset to have the best possible movements fitted, and should really have been called ultra chronometers to make this clear.  That has not stopped Longines from recently resurrecting the name, and you can now buy a new Ultra-Chron from £3,150.  However the previous owner of this vintage watch sent this watch back to Switzerland, and over £1,000 later the watch was returned fully serviced with a new crystal and date wheel fitted (we have the spare parts returned too).  That means the 431 calibre movement, beating at 36,000 bph, is running superbly.  We have not taken the case back off as we do not wish to invalidate the warranty by doing so.  Cosmetically it is difficult to fault too, with the heavy gold case feeling reassuringly weighty.  The leather strap is stamped Longines and like new, and has the signed gold plated buckle too.

This watch will be supplied with the Longines service case, service papers 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  36.2 mm

Width without crown  33.6 mm

Between lugs  18 mm

Lug to lug length  37.6 mm

Case Thickness  11.1 mm

All sizes are approximate.  The watch is photographed on a wrist of 190mm/7.5 inches.

Included with this watch is a the balance of the Longines guarantee until July 2024 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.