Maestro (effects) Phasers y shifters en venta en España

At least 2 eBay results for Maestro octave and pitch effects
At least 2 Reverb results for Maestro octave and pitch effects
70s  vintage - Maestro Octave Box for sale

70s vintage - Maestro Octave Box

Maestro Octave Box 1974 for sale

Maestro Octave Box 1974