Sinn 128

Hi all, I’m an infrequent poster on WUS and this is my first post in the Sinn forum. I’m hoping that there on some vintage Sinn enthusiasts here who can chime in on a mysterious chronograph.

I don’t actually own any Sinn watches, but I’ve always admired them. I am, however, a big fan of vintage Heuer Carreras. Not surprisingly, this watch is really interesting to me:

Sinn 128 (EN) | Vintage Sinn Collector

Apart from this guy’s…

Sinn 128

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Should I Trust my 556 in water after eight years?

I bought my Sinn 556i about eight years ago and have never had it serviced but also have had zero issues with it in all that time, running great and in great condition. However, I’m going on a beach vacation where I’ll be in ocean and pool and been wondering if I can trust the water resistance on my 556 after all these years. Its screw down crown and 200m WR, but does simply passage of time worry anyone here? I hadn’t really wanted to get it serviced until ten years, and I don’t have a local…

Should I Trust my 556 in water after eight years?

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