“Two-tone” Crown on a 2577-Seamaster?

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Hey gents,

I have two questions regarding a 1952 ref. 2577 Seamaster, if I may, hoping for your help.

I was offered the watch (I assume it’s 80 microns of gold), and while I like the two-tone dial with a bit of patina, there’s an issue: The crown seems to be also “two-tone”:



This can’t be factory-spec, I suppose? Reason I’m asking is that, while I’ve seen wear on a lot of gold-plated crowns, this one doesn’t seem to be regular wear, it’s so clear-cut. Also, I thought that cases/crowns underneath gold-plating were brass, not stainless steel... I compared it to all the ones I found on Chrono, but as expected, there’s not a single one like it. What are your thoughts?

The case and the gold are in great shape all around, except for the area around the crown, which has this discoloration that isn’t too uncommon. The enlarged picture exaggerates it, of course, but do you happen to know if it’s possible to get this „cleaned“? With a thick 80 micron layer of gold, I was thinking that the lightest touch of polish might help, even though I’m not exactly a fan of polishing under normal circumstances. If you’d recommend against it I’d leave it as is, but I thought it might be worth asking. 😀

As always, thanks to everyone who takes the time to respond. I do appreciate it.

Oh, and in case you were wondering why there are no further pictures of the watch: The seller is an elderly gentleman who kindly asked to not publish the watch online, apparently he had a bad experience of some sort. I don’t want to discuss this and I’d happy to post pictures once it’s mine, but for now I feel like appreciating his wishes is the right thing to do.
 
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Part of the gold metal plating has come off, and the crown would need to be replaced in order to bring the watch up to its potential value.

Also, based on that photo, the gold cap does not appear to be in anywhere near "in great shape all around".
 
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Omega usually used SS rather than brass, sign of a quality manufacturer.
The crown & that side of the case has a lot of wear, it has obviously rubbed on something, like cuff or wristband.
 
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Part of the gold metal plating has come off, and the crown would need to be replaced in order to bring the watch up to its potential value.

Also, based on that photo, the gold cap does not appear to be in anywhere near "in great shape all around".

Which confirms what I was worried about, thanks. Regarding the gold cap: it’s only on that side of the case / the area around the crown, weirdly. Might have belonged to somebody ham-handed... 😁
 
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Well you know me...if it's cheap then grab it 😁

Haha, the negotiation is still ongoing, I’m looking for ~280EUR. I’ll keep you posted. 😀
 
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I can see from the photo that the case and lug have worn thru spots. Leave the crown like that to match them.