Civilian (1973 and 1980s Batches)
Mark XI 6B/346 — Civilian (1973 and 1980s Batches)
1973–c. 1984
Genuine civilian Mark XIs sold by IWC in two batches of 500. Told apart from service watches by a seven-digit IWC case number on the back and no military markings.
Two batches of 500 pieces (1973 and 1983).
No verified image of this watch yet
Identifying details
- Soft-iron inner case
Soft-iron inner case and dial forming a cage that shields the movement from magnetic fields.
Variants of 6B/346
Reference overview →| Variant | Production |
|---|---|
| RAF, White 12 Dial | 1949–1952 |
| RAF, Triangle Dial Without T | 1952–1963 |
| RAF, Encircled T Dial | 1963–? |
| RAF, Encircled T Dial · Encircled T, Hooked 7 | Undated |
Case & movement
- Reference
- 6B/346
- Production
- 1973–c. 1984
- Case material
- Stainless steel
- Case diameter
- 36 mm
- Crystal
- Acrylic, held by a screwed retaining ring
- Movement
- Manual winding
- Date
- No
- Caliber
- IWC 89
Dial, bezel & hands
Unknown attributes are left out rather than guessed.
Movement
IWC 89
Albert Pellaton’s hand-wound centre-seconds calibre with indirect seconds drive and a Breguet hairspring. The Mark XI version stops the seconds for synchronisation. Early batches had no shock protection; later ones were fitted with Incabloc.
Manual winding · Introduced 1946 · 18,000 vph · 17 jewels