Huertecilla wrote:I am not sure what I will do. In general I am not a fan of ´restoring´ away patina and on this one there are a lot of edges that need be kept sharp, but it just looks scrúffy.
If there is a watch case design that is better dressed up with a dry stone than with a buffing wheel or rotating brush, it is this one.
First thing is to take it apart and give a good clean.
Ed, how tricky is getting the window out on this one?
I'd agree that the finish needs to be done on a stone or the right sandpaper*, so you can give it nice straight strokes in one direction on each facet of the case.
I went and looked at that case & glass(I keep all cases stored by buttons pattern, modules size and color) - the screen was glass on all three, so I am assuming your's is too. Put in oven at 175c/365f. for 10 minutes, grab with a rag and push glass out, from the inside. Obviously with the movement out

I found something unusual - I have three of those cases, 2 were the 2/4 button/setter combination, the last one had the third contact at 7 oclock for the dual time zone NS module. Only one was logoed Novus on the case, but all three are marked on caseback and clasp. And all three have slightly different angles and finishes -one has a factory polished face, the rest are brushed.
*I've been using #216U sandpaper made by 3M lately for some of my stainless re-finishing. It is actually made specifically for roughing-in the curvature on string instrument fingerboards but has an odd texture that seems to work good - and it is self-adhesive on the back.

It is a 216 grain sandpaper(odd size) that was then painted over, so the grains can not be too aggressive, yet they are large, sharp grains that don't break lose from the paper and surprise you with a big gouge.
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