I have a nice original Centaur in the Chicago suburbs that I would consider trading only for a nice WH20 (+\~ cash if necessary). The Centaur has a day-1 mylared playfield, near perfect back glass, new plastic set, Alltek mpu, and working reverb board.
I am not interested in selling the Centaur outright or trading for any other machines besides WH20 at this time.
Thanks,
Ehren