⭕ This is a rare and historic synthesizer. It was one of the earliest Putneys made in 1969, Serial #19X. It is in excellent condition, hardly a scratch anywhere. All three boards were recently serviced and calibrated by Robin Wood at EMS in England. Electrolytic capacitors have been replaced, envelope maximum decay time tweaked up to 45 sec., Osc3 increased slow frequency range. Apart from that, everything is original, no modifications have been made. The matrix pins are all white - this is how the early Mark I Putneys came. Even the AC plug is still original. The pin matrix surface itself looks like new.