I just sold one of the most beautiful watches I have ever seen to one of my best customers. An 18ct exploding dial Longines but with the numbers in two-tone gold as opposed to solid black. Even the exploding dial Patek which Doyle had a few years ago (with the broken lug) wasn't as nice as this. And that one sold for between 1.25 and 2.6 bloody fortunes! It is so nice that I took it in to my repairer for a service and he reported, curiously, that it didn't need it! The beat is, as would be expected for a watch which I had been wearing without problems and with a replaced hour hand, fine. But I am having a peculiar problem. The buyer (who has 350 watches, so isn't exactly a novice) LOVES it but he reported that it was not working When It arrived back tt was stopped at 5.25, with fouling hands! Which it certainly wasn't when I wore it (for lengthy periods) So I took it back to the repairer who checked it and took the dial off to repair it! The buyer then reported that it was losing, irregularly, 10 minutes a day. So I took it back to the repairer again and asked him to check the canon pinion. The buyer now reports that "When I wind the watch and leave it on my desk, it keeps time. When I wear it, it loses about ten minutes every couple of hours." So i assumed he must have taken it off and put it on a laptop and I shipped him my demagnetiser! (He doesn't report that it is solving the problem) Is there anything obvious I may be missing here if this still doesn't solve this problem? To me, that report can only normally point to a canon pinion but that has been checked and is not the problem.