guitar effects pedal. Colorsound supa wah fuzz swell. 1978

A rarely used 1978 colorsound supa wah fuzz swell pedal in dark grey and chrome. On this pedals birthday " matchstick men and matchstick cats and dogs was number 1 in the uk charts !!!! This pedal is dated inside 13th april 1978. Was purchased in 1986 and due to non use and protective storage it has remained in a very collectible condition for its age. Has been recently checked by electrician and all internal components work and fully functional. This is a fine antique collectable and after reviewing the market it is classed as highly rare in this condition for its age. It has been plugged into amp and there is some crackling noises when using footplate potentiometer so it has been advised that a cleaner spray be used to remove this issue. I am selling priced with this knowledge and also its rarity. Any questions please ask. Please review all photos for condition and details. Open to reasonable offers near asking price and will only reply to these. Thank you.