I sold this Porsche set a few months ago for £3100, it was immaculate in every way and fully serviced - The Master Times very rarely go wrong but a few things can afflict the Monte Carlos - the hour disc can be sluggish in flicking over if the movement is a bit gummed up, and the re-set and start/stop mech can sticky. Will be fine if serviced. Very interested to see pics of the set youre interested in.

Vic