1970s Earth Sound Research Graphic Fuzz. This is one of the rarest fuzz pedals out there and also one of the most unique. It has a crushingly heavy fuzz tone and the filter knob is tweakable to give a biting cocked-wah type effect. The pedal works great and is in good physical condition with a few chips and scratches as seen in the picture. I'm not sure if the back plate is original as it is a slightly different shade of orange than the front but I can't be certain as I have never seen another one of these to compare. It has a sticker inside dated March 2011 so it must have been repaired or serviced at that time but I am not sure of the details as I purchased the pedal in 2013. I will ship via USPS Priority Mail with insurance within 24 hours of payment. If you have any questions please feel free to ask. Thanks!