I have a few rear derailleurs that I got in a box of stuff - no kidding - and I'm not familiar with the model. The derailleurs have a closed upper pulley cage, and open lower cage, and are adjustable in, uh, torsional pivot - a A and a B position. The logo is in script, silk-screened on the parallogram arm.

What model do I have here? What vintage?

Thanks in advance -

luker (lost in campyspace)

Looks like the attached picture, but I was too lazy to take one myself - this is ripped from sneebay.

Better box one up and send it out here so I can give you my expert opinion. :p

First generation Chorus.
1987 at the earliest.
Designed to be useful with tight or wide ratios depending on the settings.

Ah. So, of course, the ones on eBay are not really record...I have a dark gray one, looks painted. I guess that is a later version?