Tissot Seastar Auto 2591 #2

Razz · October 24, 2023

I posted this one when I first picked it up back in July. Came in parts and the automatic works was put together wrong. I learned a lot on this family of movements and really am happy with the outcome as well as the journey. First I will post how it arrived, the for now final, the parts I sourced for replacement, and the latest disassembly for service in case it helps someone else. I had to match every part to the tech sheet and found only 1 missing screw, but the calendar and date rings were toast on arrival. They were good for practice during assembly because they only had the paint removed and I separated the hour wheel from the day ring so that I could work on the calendar and day advancements and see the bridges on the dial side.

The original bracelet is a little different with a single link style and needs a little adjustment to get the end covers to lay flat.

The watch has been going for about 22 hours with more than 14 hours on the wrist. I am never sure when a full wind is reached on these that have a manual wind function as well. The watch has gained a bit over that time and the timegrapher numbers are pretty decent with not much delta on the horizontal for either the beat error or the Amp. On the vertical 2 of the 4 had good numbers and deltas on the Amp and beat error but the other two are off a bit.