The serial number dates this CE-2 at January 1986. It is in excellent condition and works exactly how it should. This unit was professionally upgraded with Monte Allums CE-2 mod at some point.
From Monte Allums website:
"First, we have modified the voltage giving the pedal more headroom and improving the quality of the effect. The pedal can now be used with a standard Boss PSA power 9V adapter. We also replace the main opamp with a OPA2134PA Burr Brown opamp. This is a very Hi-Fi Low Noise opamp and will add clarity and fullness to the effect.
We have also upgraded several key components in the circuit with higher quality components. This will add clarity, fullness and a much more focused tone to the circuit. We also modify a resistor increasing the brightness of the LED. We also supply you with a 3mm Bi-Color LED that flashes with the rate of the effect. We modify a capacitor that doubles the rate of the chorus effect to give you a super fast chorus effect while preserving the slow rate. The richness of the actual chorus effect has also been enhanced. If you are looking for an absolutely beautiful, rich, smooth and lush chorus effect this is the mod for you. A great sounding analog chorus just got 10X better!"
All I know is that this is the best, most lush chorus I have ever heard. This is a winner.
Does NOT include power source.