IWC Pilots Watch Chrono-Automatic Edition Laureus Sport for Good Foundation IW371712
I've inherited the above watch from my late father and ever since I've had it, it has lost a couple of minutes per day.
I had it sent back a few years ago and got charged quite a lot of money for servicing however it is still losing about 2-5 minutes per day.
How can I solve this. I make sure to reset the time to the correct time and wind it about 40 times each day, however this makes no difference.
Any suggestions?
Stuart