From my small private collection I am selling the holy grail of effects units, not just for the Chapman Stick, a Patch Of Shades with serial number #6. There were two production runs, one in 1981 and the other in 1989, and in total only about 100 units were produced, making this one of the rarest effects in the world.

Fully functional with EU power supply. See pictures for optical condition. Send me an email if you are interested.