Some photos of an incomplete revision of an Eterna Sonic Two Tone watch. I got the watch from a watch fair in almost NOS condition - as the movement was totally clean without any oil residues in the bearings, I assume it must have been lubricated with high quality oil in the past. Thus it just needed some checks here and there and new oil.
Re-lubricating
![](https://blog.noq2.net/content/images/IMG_8679.jpg)
I start "in medias res" with a shot of the beautifully finished tuning fork movement - yet another ESA 9162.
![](https://blog.noq2.net/content/images/IMG_8680.jpg)
With the tuning fork module removed, the wheel train bearings can receive some new oil...
![](https://blog.noq2.net/content/images/IMG_8681.jpg)
...just as the tuning fork module itself...
![](https://blog.noq2.net/content/images/IMG_8682.jpg)
...and the calendar and setting mechanisms.
Polishing the crystal
![](https://blog.noq2.net/content/images/IMG_8670.jpg)
As the plastic crystal had some minor scratches on it, I gave it a polish with sandpaper (grit sizes ascending: 400 -> 600 -> 1000). I did this under water to get a good result.
![](https://blog.noq2.net/content/images/IMG_8674.jpg)
Picture before a final polish with polyWatch.
![](https://blog.noq2.net/content/images/IMG_8675.jpg)
Display after polyWatch-based polish - the crystal looks very good again (although the unfavourable artificial light conditions reveal some micro-scratches as you can see in the blue-encircled area =-).
![](https://blog.noq2.net/content/images/IMG_8677.jpg)
Hands before re-luming.
Finished watch
![](https://blog.noq2.net/content/images/IMG_8719.jpg)
The movement back in its case.
![](https://blog.noq2.net/content/images/IMG_8725.jpg)
The Luminova luminous paste under low-light conditions.
![](https://blog.noq2.net/content/images/IMG_8730.jpg)
The finished watch with a new strap.
greetings noq2
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