Corum
Founded in 1955, this swiss watchmaker makes a wide selection of high-end and luxury watches. Although they are quite expensive, the majority of watches that Corum makes are limited editions, which do make them quite rare and hard to find.
They have recently gained a lot of attention as they were the makers of the 2007 World Series of Poker Bracelets.
You can check out the complete list of Corum Gold Watches for sale.