Other than eBay, what are some good, reliable sources for buying vintage wristwatches? Are there some specific sites dedicated to selling them? I am particularly keen on my "birth year watch" from 1970. I don't want to spend a lot but would like something unique to wear on special occasions. I see a lot of Bulovas from that vintage. I like them because they tend to be larger watches and I am big guy so 38+ mm is best for my wrist.