Hi.

After many years, I finally managed to buy a rare ref.691 10 ATM. Unfortunately it is missing the original bezel and crown. I would be happy to buy as if someone has these parts. Photo for attention.

Greetings

Quote from: YuriyV on February 11, 2025, 03:29:57 PMEven if you are able to obtain a new hairspring then you need to "pair" it with concrete balance wheel. Which is complicated operation (vibrating balance) and requires special equipment. Usually it is done on watch factory. So, indeed, balance complete from a right donor is your viable option.

My thought as well.  I have not vibrated a 36000bph balance, not sure I am in a hurry to either.  Especially considering the availability of balance completes from donor movements in the used parts market.

Even if you are able to obtain a new hairspring then you need to "pair" it with concrete balance wheel. Which is complicated operation (vibrating balance) and requires special equipment. Usually it is done on watch factory. So, indeed, balance complete from a right donor is your viable option.

In all the years of buying thousands of parts for Zodiac I have never encountered seperate sealed factory hairpsrings for any of the models.  From the factory literature, Part 734 is supposed to be "Flat Hairspring, Regulated".  However, it would be much better to find a balance complete even if you had to buy a parts movement.  The balances in the Zodiac calibers 70 - 88D are pretty durable and rarely have broken staffs or damaged hairpsrings except for repair error, so a decent parts movement will often have a usable balance complete.

It appears to be original. Maybe except crown. It looks like a latest replacement from some 1990s model (signed and screw in design). Original crown was not signed.
It has very fresh colors indeed.    Seldom seen these days as bezels tend to fade.

Quote from: Butch on February 01, 2025, 05:34:34 AMThat model is displayed in the 1975 catalog. Looks like yours is in very good shape.

Thanks Butch! It's not mine yet, considering it......it ain't cheap!

That model is displayed in the 1975 catalog. Looks like yours is in very good shape.

I am not familiar with this model SW.  Does it look legit and authentic? Thanks!

Quote from: bumo79 on January 29, 2025, 12:45:34 PMThe two most popular designs of the now-defunct Swiss bracelet company, NSA Novavit. They produced for such notables of the watch world as Rado, Certina, Heuer, Zenith. It's worth searching for them under these names as you need extra links. The bracelets were often used in the 1970s, mainly for models from the SST, Senator and Spacetronic lines.

Thanks bumo79!  I thought I recalled seeing one of these on an SST Mystery dial, but I haven't been able to find it.

The two most popular designs of the now-defunct Swiss bracelet company, NSA Novavit. They produced for such notables of the watch world as Rado, Certina, Heuer, Zenith. It's worth searching for them under these names as you need extra links. The bracelets were often used in the 1970s, mainly for models from the SST, Senator and Spacetronic lines.