Is there such a thing? I appreciate that some brands offer a higher likelihood of retaining, or even appreciating in value (Rolex, AP, PP etc). It seems that there can be significant variance within brands dependent on the model and specification.

I'm going to qualify my question by saying that I understand that watches are probably best not viewed as a vehicle solely for investment. That's a whole other debate and not really the thrust of my question. I'm interested in fellow enthusiasts' experience and perspective.