I'm not a serious collector, but I would think that having them serviced to get them in working order will greatly increase the sale price. I would recommend a purely mechanical servicing, and do not polish or "improve" the aesthetics at all. Leave as is, but service the mechanicals. You'd need to use someone good though, or just do nothing. That's my opinion.

: I have several Sebrings from my dad's road and rally days in the
: mid-60's. Two work and one doesn't. Would it be better to get
: them cleaned and working prior to sale or sell them as is for
: the enhanced 'patina' of the original watches? If I should have
: them cleaned, what kind of watch repair shop should I look for?
: TIA.

: Tom