Boss OS-2 Overdrive/Distortion Pedal

Is it an overdrive? Is it a distortion? Well, it's both I guess, the original 'slashie' of the pedal world. Goes from polite to obnoxious with the twist of a knob, plus it's an easy colour to see in the dark. Yeah/yeah! 

Model: Boss OS-2 Overdrive/Distortion
Made: Taiwan, 2010 (serial BZ14404)
Type: overdrive/distortion
Power: standard 9v supply or battery (not included)
Switching: buffered bypass
Equivalent new street price (approx): $139aud
Mods: none
Accessories: no box or manual
Condition notes: used, few minor marks, very good condition