Service/restoration Helvetia calibre 75A

P1140447Here is a great Art Deco Helvetia from the 30’s. It is not running and the case looks a little tatty. The movement however looks to be in very good condition.

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TheĀ  dial is not bad, but I have a very nice NOS dial that will take it’s place.

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Helvetia were very early to introduce their own shock protection system. On the photo you can see the lower jewel setting is fitted in a flexible steel arm allowing it to move during a shock.

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I take the movement apart.

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I have cleaned the movement and it is ready to be put back together.

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I fit a new mainspring.

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I doubt these parts where Epilam treated when new;)

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I fit the shock protection system and see that the balance moves freely.

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I put the gear train in place.

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The movement is very nicely made with 3 individual train bridges.

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Movement back together and ticking.

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There is a large beat error so I adjust the collet and try again.

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Movement on the timegraph.

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That’s excellent for such an old watch!

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As mentioned earlier I had a very nice NOS dial waiting for this watch. The two toned silver finish goes very well with the blued hands!

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I had the chrome case restored and it looks superb.

I have ordered an open end leather strap, but a Nato strap does the job until it arrives.

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