How rare? Can't say for sure, but I can tell you I've never seen one. Quadrant dials are fairly uncommon too. That's a pretty steep price tag too.
Very uncommon but not very desirable so price should be just slightly more than what the equivalent YG model would bring. You will of course have to confirm this is WG.
Too bad it is a nice and unusual watch and the WG really does a lot to take it out the ho-hum range, but as Mike pointed out, not a huge demand, so easy to turn it over in the future should you desire.
