The word investment means different things to different people >

If you are buying for the joy of ownership, then purchase only what you like and then hold it for as long as that fulfillment outweighs the money you can sell it for. Stick to that and you'll enjoy the hobby and have no stress about values.

If you are buying purely for financial gain then buying a vintage Rolex is no longer the safe punt it was a few years ago when values were being exponentially pushed up by dealer spreads making it safe for all. Unfortunately/fortunately that game of musical chairs/pass the parcel has come to an end. Some are stuck with a parcel they can't pass on and some who would like to take it no longer have a chair with which to sit.... that was the way the cooky crumbled!

For as long as the world is stuck in this spiraling shitty financial situation and the future of economies & currencies remains uncertain there is no safe ownership price let alone safe investment. If you are just trying to buy low and sell high then I would advise you to leave watches well alone. Unless you are a knowledgable and connected dealer with a wealthy client base to call on then they are not a good financial investment any more.

Just my 2cents

Steve