To button or not to button...that is the question

[VictorVincimus]

Button experts. Is this a single hole button? It's the same on both sides. Not sure how to clean this.

 

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[CRUSADER]

probably not a button

 

[normalnovice]

my guess would be a gear of some sort. maybe clock related.

 

[Bryanhashemi]

Clock gear. I would agree

 

[Bigcypresshunter]

Will it stick to a magnet? It looks like steel. I found a very similar piece and the consensus was some kind of construction fastener. Not button.