The watch thing can get addictive.. The Zodiac GMT was one I ran into locally for $150. As clean and original as it was I could not pass it up. These range from $200 to over $750. This one is an early to mid 60's model with the harder to find silver dial and "arrow" hand. The "world time" is the result of a trade, I let a collector get a "grail" Sea Wolf (yellow/black racing bezel) and I get a watch that I will wear that is just about as rare. To bad Omega never made a GMT or World Time watch back in the day, Flightmaster is about the only "vintage" Omega I know of. The only hole right now is perhaps a "dress" watch, my Soccer Timer might just find a new home to fill that need.