I was initially excited by the rarity of this watch, and it's unusual dial setup. It has the same movement as the Rolex Prince, but since it's a Gruen this watch is much cheaper. So I felt it was a bit of a bargain, relatively speaking.
After wearing it a few times, I realized that I don't like the way a rectangular watch looks on my wrist, or at least one as narrow as this. I also decided that I would far prefer solid gold over gold plate.
When I sold (on ebay) there was a bidding war and I was able to get all my money back. Good evidence that rarer and more valuable watches are cheaper in the long run, as your taste changes and you sell things you once liked.