I wouldn't...
For 'that' kind of money, you can buy an original still in its box - and in the case of the ubiquitous Police Positive - you can buy several.
All that you really have after something's been to a 'restoration specialist' is a refinished used gun.
Sure, it's pretty - but it's still a refinished piece, where the value lies in originality.
That's how any dealer sees it and how any potential buyer does, as well.
Just keep your eyes open - there are a 'lot' of older Police Positives out there and they're reasonably priced, too.
Vaya,
Scouts Out!