IWC how markers question

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Hi all,
I have had thus watch for almost 50 years. It was my grandfather's watch and was bought for him on his 50th wedding anniversay. I have had it longer than he did. Along with my 2 old Omegas that belonged to my dad, thesevare my 3 most important watches.

I want to know what is going on around the hour markers ... not sure it came to me with the marks around the markers.
Thanks
 
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Looks like the acquired filth of the ages, maybe a visit to the watch doctor for a probably over due service and a careful cleaning would be in order
 
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Looks like galvanic corrosion between the gold markers, dial coating and the underlying material of the dial.
Edited:
 
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Interesting bracelet....馃槈 - show us more. (I would not restore the dial)
 
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Looks like galvanic corrosion between the gold markers, dial coating and the underlying material of the dial.

Yep鈥robably a copper or brass dial
 
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Those markers are almost certainly embossed, rather than applied, and it is a cheaper process. That type of degradation is an example.
 
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It's been my experience that dial "cleaning" becomes a an "iffy" proposition very quickly. If you can tolerate/appreciate it, I'd suggest leaving it alone. If you can't, you can try cleaning but most likely will end up with a re-finish (from what I hear the collector's "kiss of death"):whipped: