Peter Fonda wore a prototype Yellow Gold Rolex in the movie Easy Rider. This watch is very rare and has what is commonly referred to by Rolex collectors as "Nipple" minute markers.
In other words, if you click on the image below of the GMT you will notice that he 5 minute marker indices have an unusual dome shape to them.
Click here to watch a video of Peter Fonda discussing his Yellow Gold GMT Prototype.
This is a very cool watch and I think as a designer it is really cool how it matches his gold sunglasses.