I have a vintage 1960s Zodiac Hermetic for sale.  It is solid 14K gold and in excellent condition.  $650

It is essentially the same watch as this one currently on sale by an internet retailer:
http://www.farfo.com/menswatches/Page7/hermeticgold.html (http://www.farfo.com/menswatches/Page7/hermeticgold.html)

Please email me if you are interested.