Up for sale is a vintage Maestro MP-1 Phaser. This pedal is in fair cosmetic condition, and functions 100% as it should.
The only known modifications to the pedal are a replaced battery clip, and modified batter door. The original battery clips have been replaced.
The "speed" and "balls" pots date at 1976, which would put this pedal in production right around this time.
We have supplied complete photographs, but if you have any questions regarding this pedal, please don't hesitate to ask!