About SEWILLS
Sewills, historically known for marine chronometers and precision instruments, produced small runs of wristwatches in the late 20th century using Swiss mechanical calendar chronograph movements (often Valjoux-based) encased in vintage-styled English cases. Many collectors view these as heritage pieces that merge English dial aesthetics with reliable Swiss mechanics.
Vintage Sewills watches are considered collectible because they offer an accessible entry point into traditional English horology while preserving the classical design cues associated with Britain’s watchmaking heritage. Their affordability – especially compared with contemporary luxury brands – allows collectors to obtain pieces that reflect the restrained, functional aesthetics historically valued in the United Kingdom. At the same time, Sewills’ limited production volumes and its past role in supplying precision instruments to institutions such as the Royal Navy contribute to a sense of historical authenticity that enhances their desirability in the vintage market.
Case and Strap
- Round coin-edge case with olive lugs, thick ‘honey’ tone gold plating
- Double glazed, mineral crystals on the front and back bezels
- Pushers for chronograph operation
- 18mm genuine leather strap
Dimensions
- Diameter w/o crown 37 mm
- Width w/ crown 40 mm
- Height 43 mm
- Thickness 14.8 mm
- Lug width 18 mm
Dial and Hands
- Egg shell tone dial, Arabic numerals, complex multi-layer print, white chrono functions subdials
- Calendar apertures @ 12, moonphase aperture @ 6
- Signed ‘SEWILLS – Est’d 1800 a.d. – LIVERPOOL – SWISS MADE’
- Gold tone hands for time, blue painted hands for chrono and extra functions
Movement
- ETA Valjoux 7751 full calendar/moonphase/chrono/automatic
Testing Results
- Testing duration: 1 week cyclic test
- Average timekeeping range: 15-30 sec/day
Servicing and Warranty
- Fully serviced with disassembly in our Bristol shop, mechanics in full working order
- 12-month movement warranty, see Warranty Terms and Conditions
- No water resistance guarantee for vintage watches
