Strange marks on a seiko 6R35. Should I be worried ?

Just noticed this on the movement of my SPB259. Looks something has been rubbing on it

Should I have a professional look at it ?

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Is it running ok?

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Considering the SPB259 has been out of for few years, I'm guessing you have used this watch for a while.

If then you should get it checked. And how is the watch running?

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This is a very strange position for something rubbing. This is second reduction wheel of the automatic winding mechanism. So there is nothing up there , besides the Pawl level.

To all the experts: am i wrong? I think it is possible, that right side of the lever can jump of the wheel and is now rubbing between the wheel and the coverplate… 🤔🤔

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nightfury95

Considering the SPB259 has been out of for few years, I'm guessing you have used this watch for a while.

If then you should get it checked. And how is the watch running?

It's still under warranty though

Had not worn it in a while but it's running about how well as it used to, about +4s/day

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SpecKTator

Is it running ok?

About +4sec/day, same as a few months back

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Hypertore

About +4sec/day, same as a few months back

Sheesh that’s like a certified chronometer. If you have doubts, get it checked out for peace of mind.

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Hypertore

It's still under warranty though

Had not worn it in a while but it's running about how well as it used to, about +4s/day

If it is running that good then wear it for a few days and see if there is anything different with the watch. Then you can take it to Seiko or a watchmaker to get it checked for your peace of mind. I would get it checked under warranty.

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Looks like it was over lubricated during manufacturing and its excess oil on the gear wheel. I have a few watchmakers commenting on Seiko using too much lubricant

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I agree @Markell that seems to be over lubrication. If like you said above it's still under warranty, if possible I would ask for a replacement or, at least, a revision. That colour could be old lubrication or in worst case stain/rust/moisture residue.