Mark XI 6B/346
1948–19533 variants
Built to the same MoD specification as the IWC Mark XI and very similar in appearance, but with a 35.3 mm case and the JLC 488/SBr calibre. The RAF bought about 2,000 in 1949 and then switched to IWC; the RAAF bought 420 in 1950 and 600 in 1953. Dropped in 1953 for lack of shock protection and out of service before 1963, so no JLC is known with a T on the dial.
Four batches identified in JLC records, totalling 2,950 (JLC internal ref. 161).
Variants over time
All recorded years
19451954
194519501955
Faded ends mark approximate or unknown dates. Years are as stated by the cited sources.
Variants
Reference specifications
- Brand
- Jaeger-LeCoultre
- Model
- Mark XI
- Reference
- 6B/346
- Category
- Pilot
- Production
- 1948–1953
- Case material
- Stainless steel
- Case diameter
- 35.3 mm
- Date
- No
More specifications (2)
- Movement
- Manual winding
Read more
- Just Because: Two Original Mark XI Pilots Watches, From Two Different ManufacturesRead more at HODINKEE (opens in a new tab)
- Time Spec: The Mark XIRead more at Worn & Wound (opens in a new tab)
- ‘Man is Not Lost’ – an Account of the Mk 11 Navigational WristwatchRead more at Horological Journal (British Horological Institute) (opens in a new tab)