Lovely red swell pedal from the early seventies, made for barnes and Mullins by solasound 

This is basically a volume pedal

Fully functional in really clean condition(the pedal does have its bottom plate - I just forgot to take a photo of it) 

Perfect for recreating pedal steel parts, ambient fades or sticking in front of a fuzz pedal to control the amount of fuzz.

Anything else just ask!