How big a watch are you looking for? If 42mm is a good size for you, you might consider a custom yokobies or xw/dotwatchworks watch based on a Seiko 6309. I think that would be a great choice because you could get something you could wear every day, that would be unique, and that wouldn't be too pricey. Plus if there was ever any damage, it's easy and inexpensive to repair.

(this one belonged to WUS member HDEddie,
sold some time ago)
Another choice would be getting a gently worn Zixen, though getting one for $500 might be a pipe-dream.