This little box of slime is a delight. This is the 'black label' Japan-made version. This pedal replaced the PH-1R and added a second mode. The first mode is a classic, sweeping phase shift, the second is a 'low end' phasing that does a sweet lo-fi plucky chiming phaser. Maybe I'll keep it? 

Model: Boss PH-2 Phaser
Made: Japan, Nov 1984 (serial 484600)
Type: phaser
Power: 12v AC supply or 9v battery (not included)
Switching: buffered bypass
Equivalent new street price (approx): n/a
Mods: none
Accessories: no box or manual
Condition notes: used, few little marks, very good condition