Sinn U1

Apologies for the gap since my last update, this is entirely due to the volume of work I’ve got in right now. I thought it prudent to focus my energies on trying to reduce the queue length a little but it doesn’t seem to get any less no matter how hard I work! Anyway, I couldn’t let this Sinn U1 pass by without comment as I think they are beautifully crafted watches. This came in for a movement service and 1,000m pressure test recently.

Sinn U1

These particular models are so tactile and they feel absolutely bomb proof – almost as though they’re hewn from a solid billet. With a 1,000m depth rating they’re certainly over engineered for whatever gets thrown at them.

Sinn U1

Inside they are powered by the humble ETA2824-2, but in this particular case it’s a beautifully engineered and decorated movement. Of note is the Viton caseback seal and the signed rhodium plated oscillating weight.

Sinn U1

With the autowinding mechanism removed you can see more of the movement, I love the chemically blued screws 🙂

Sinn U1

Once the movement is uncased I can get to work stripping the handset and dial. I’ve seen the hour and minute hand described as “pointed sports” hands, and the seconds hand as  “cubist” style, whatever the correct terminology I love them!

Sinn U1

With the dial removed it’s all standard 2824 fare below, you’ve seen this calibre dozens of times before so I’ll let the pictures do the talking.

Sinn U1

Sinn U1

Sinn U1

Turn it over to start on the motion work!

Sinn U1

Sinn U1

Sinn U1

Sinn U1

Sinn U1

Sinn U1

After the cleaning and inspection phase the rebuild started with a new mainspring.

Sinn U1

Sinn U1

Again, I’ll let the pictures tell the story here.

Sinn U1

Sinn U1

Sinn U1

Sinn U1

Sinn U1

That dial and handset refitted 🙂

Sinn U1

Recase the movement….

Sinn U1

….add the autowind and rotor….

Sinn U1

….and she’s finished. The 1,000m pressure test will be done once it’s completed its test period and the caseback doesn’t have to be removed for any further adjustments. What a beauty!

Sinn U1

Sinn U1

Sinn U1

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