Anybody recognize these brake levers?

Not the first time I'm asking this question, but I'm a sucker for nice bits of aluminum. And for some reason especially nicely-made brake levers make me go all weak in the knees. So when I saw these at today's bike jumble I had to have them.

I haven't found any markings. At all. The outsides are nicely polished, on the insides the finish is slightly rougher.

Any idea where these came from?

(And yes, we have a dog and two cats and don't like vacuuming)