u/Thecyclingmosquito

I purchased a Tissot Chemin des Tourelles automatic, but I'm now feeling uncomfortable about its legitimacy. The serial number engraved on the case is missing the 'WS' I can see on all the images I can find. Apparently I should see 'Si' somewhere near the balance wheel, I don't see one, likewise no indication of the number of jewels which I've seen on most images and it is very tight to wind with the crown. The dial and general finish looks pretty good. Any thoughts on the legitimacy of this one? I've got a few days left on a 30 day return guarantee, and can't decide whether to trigger it or not.

https://preview.redd.it/0iqlu396ambh1.png?width=1397&format=png&auto=webp&s=78b47ac65ee5196537b5c7a0c17d0635b0652b37

I fitted a Campagnolo SR 12 speed mechanical groupset to my bike earlier this year. Out cycling yesterday and heard a clicking sound that got progressively worse. Checked everything it could be and decided that it was probably one of the BB cups needing to be greased and tightened. So I tried to remove the bolt from the hirth joint to get at the cups. I know that on the SR the bolt tightens anti-clockwise, so was turning it clockwise to loosen it. It wouldn't move, so got a longer leaver and the bolt disintegrated. It was tightened with a torque wrench to 50Nm when I fitted it. It was fitted on a cold day and it is now very hot, would that have caused it to expand and lock? I guess the only thing to do now is to try to drill it out, or get a mechanic to drill it out for me. Anything I should consider before taking it in? I can still ride the bike, with the annoying click.

https://preview.redd.it/zqqtlacv1fbh1.png?width=588&format=png&auto=webp&s=07063bdde12f1838ec78994df752494cab8a8365

I have a BCPD 403, the beautiful dark blue one. Recently it has started to lose more time than I'd like, it was losing around 1 - 2 seconds per day and has slowly drifted to losing at least 10 seconds per day. About once a week I'll reset the time and fully wind it by hand (the full 200 rotations of the crown). Last week after doing this and then wearing it pretty much full time, it stopped after five days. Started again when I wound it. The winding weight (if that's the correct name) is moving as expected, but I suspect it isn't winding the spring. If I move my arm a bit faster than normal, I can, maybe, feel the watch slightly 'humming', as if something is slipping. Back to the Oris Boutique tomorrow, but, anyone experienced anything similar?