Hamilton watch making a louder metallic ticking noise at certain positions?

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Sorry if this isn't the right place but I'm hoping to find some sort of explanation for why a watch would tick louder when the seconds hand is at certain positions? Got a Khaki Field recently and it ticks louders at 10 seconds into a minute and 40 seconds into a minute.. any ideas?
 
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Probably the reciprocating dingle arm exhibiting a capacitive reactance, and it is due for major overhaul! Or it could be a scored sperving bearing. I’d check into it if I were you.