This is the stem my bike had on it up until last week, it's super light, just a little too long for me:



Today I saw this pic on Sheldon Brown's site of his IRO bike, and that Avenir stem looks pretty much exactly like mine except for the length and the angle.

http://sheldonbrown.com/org//iro/584/images/09.jpg (large pic so link only)

Wonder how much these went for? Looking on Avenir's site it looks like they're not made anymore. I wish I could find one like Sheldon's, because IMHO that single clamping screw that pushes against the side of the steerer tube seems superior than 2 exterior clamping bolts.