[sdiy] Regelwerk fader

[dj hohum]

Here are some pics of the regelwerk fader that I'm trying to replace.
Does anyone know who makes this and if it's a standard part?

BTW: The other pictures are of a roland board that came from a
synth/organ some time ago. I'd like to identify what the circuits are
(were) on the board, and in particular, what that black round part is
with ten leads.

http://www.flickr.com/photos/9891418@N07/

tnx,
daryl