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Lost Navi - 6BB (RAF) - Case Back Markings /|\ 6bb-6645 99-5238290. 501/76

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A Fantastic Military Issued RAF Lost Navi Watch in Superb Condition with Original Military Engravings, 1976

Approximately 2000 pieces were produced of these sterile dial watches which are of monobloc construction to the tonneau-shaped case and they still pose a mystery in horological circles after years of discussion! Most attribute the “Lost Navigator” watches to Hamilton as CWC didn’t take over the production of wristwatches for the armed forces until around the ’80s yet Hamilton’s were used up until around the mid 70’s so the “Lost Navy’s” were issued between the terms of both manufacturers.

Only issued in 1976, the dials are sterile or anonymous with no brand name under the usual 12 o’clock position.

What’s On Offer 

This watch is in fantastic shape at well over 45 years old and still in fine working order. The rich black dial of course bears no branding as with all the 'Lost Navigators' hence the mystery that shrouds them and may add to their appeal. Boasting bold brilliant white  Arabic numerals and lumed hour plots in an out minute track. The T for Tritium emblem is present and the military arrow sits above 4 o'clock denoting the watch as property of the MoD. The tonneau case is in nice shape too with very few signs of wear and the caseback bears the military engravings we would expect to see which read: 6BB-6645 99-5238290 501/76

Additional information

Made from

Case: Stainless steel

Dial: Black dial, Swiss Made 

Crystal: Plexi 

Bracelet: NATO Style

Technical specifications

Winding: Manual

Movement Type: Mechanical hand-wound

Calibre: AS-2160

Jewels: 17j

Waterproof: When New

Power reserve: 50hrs

Purchase details

Condition: Excellent

Model Reference Number: 6BB

Date of issue: 1976

Guarantee: 12 months by VWS


Width: 36 mm

Lug width: 19 mm

Lug height: (lug to lug) 41 mm

Wrist size:  Adjustable