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Mark XI RAF Navigators 6B/346 Military

Pre-owned () | Year of production 1949 | No original box | No original papers
+ $107 for insured shipping to
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Shipping and Seller Information

Item is in stock
Anticipated delivery: 2/6 - 2/17
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More About This Listing

Basic Info

Listing code 7G0IY3
Brand Jaeger-LeCoultre
Reference number Jaeger-LeCoultre Mark XI Navigators
Dealer product code 10139
Movement Manual winding
Case material Steel
Bracelet material Leather
Year of production 1949
Condition (Light signs of wear or scratches)
Scope of delivery
No original box, no original papers
Gender Men's watch/Unisex
Location United Kingdom, Waltham St Lawrence
Price £9,495 (= $11,992) [Negotiable]
Availability Item is in stock


Movement Manual winding
Movement/Caliber 488SBR
Frequency 18000 A/h


Case material Steel
Case diameter 35 mm
Water resistance Not water resistant
Bezel material Steel
Crystal Plastic
Dial Black
Dial numerals Arabic numerals


Bracelet material Leather
Bracelet color Brown
Clasp Buckle
Clasp material Steel


There is in the watch collecting world a dedicated group whose primary focus is on collecting military wristwatches.

The Jaeger-LeCoultre Mark XI is one of the most sought after and iconic watches within that genre. And this particular example shows why it is such a desired and important watch.
It has since been restored by one of the country’s foremost watchmakers.

More commonly known as the “Mk.XI" or "Mk.11,” the 6B/346 design reflected lessons
learned during the war and was much larger watch than most of the wartime 6B wristwatches.

The JLC calibre 488 SBr movement is a 12.5 ligne, 16-jewel work of art featuring Glucydur balance, Breguet-type Nivarox hairspring, non-magnetic curb pins, and amazing finishing. This movement was specific to the 6B/346 watches, whereas the calibre 89 used by IWC was used in many other watches.

The case back markings on this example place it as S/N 3292, with a movement serial number of 594867. This means our particular Mk XI was part of the third batch of watches ordered by the MOD in January 1949. The total number of JLC Mark XI's came to 2950 between 1948 and 1953.

It has a second-generation broad arrow dial and pointed hands combination, the standard RAF case back and fixed lugs. The case whilst worn and with scratches retains its light satin finish. The dial has aged hour markers but the numerals are now clean and bright. The matte black dial has also stood the test of time.

The watch runs perfectly, keeping good time (especially for a 71-year-old watch!) whilst being comfortable to wear. To complete things, we are selling the watch with a Khaki NATO (see photos) and a new brown leather NATO-style G10 Service strap.
These are increasingly rare and are not seen for sale very often. So, if this watch speaks to you (and it should!), now’s the time to add it to your collection.

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