via this auction
"This is an original Roland tb-303. I just had it in for servicing and everything cleaned and checked through. This synth has never been modified. The resonance pot was inoperable because the contacts had fallen off during its 30 years of service. Rosstronics repaired the original potentiometer and serviced the rest of the machine. There is some light cosmetic damage (normal for the life of the synth). Also there is and inscribing on the back from the original purchaser back in 1982 (See pictures)..."
