Woods valves?

I was about to put some air in the tires of my Christiania today, and when I unscrewed the little cover on the valve, I wasn't quite sure what I was looking at. The valve looked like a larger Presta valve, only without the little screw stalk in the middle. A quick Google search revealed that it's a "Woods" or "Dunlop" valve. Very strange indeed. According to Sheldon Brown, they're "very rarely seen in the U.S." He also says that they my Presta pump ought to do the trick on them, which is good news!

Here's a photo from Sheldon's site.