As of February 2026, I'm now retired, so everything from electric-watches.co.uk is up for sale!
Thought to date from the 1950's is this lovely Bergeon Hand Watch Mainspring Winder kit. Nothing is missing and has sizes from 00 to 19, covering external diameters from 5.3mm to 19mm.
Clearly marked "Swiss Made," reflecting Bergeon's long-standing manufacturing in Le Locle, Switzerland
A quality kit!
Please ask any questions before bidding or buying