The reason I'd rarely recommend someone "new to watches" to polish out scratches etc. is because that person probably does not know what he or she prefers. If it gets serviced without polishing, it might end up growing on the owner and he/she'll treasure those signs of an instrument put to use by someone dear to them. Maybe it'll end up annoying the heck out of him/her, nobody knows. If it gets polished immediately, that person will never get to form an opinion.
Like completely renovating a house before you've moved in and gotten to know what suits your needs and what doesn't.
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