Boss OC-3 Super Octave.
As well as the normal OC-2 octave and 2 octave down, also has a drive mode, and two polyphonic modes (so it will handle chords and ringing notes etc).
Very near mint condition, with box, but no manual.
Photos (from phone):
[url="http://s1339.beta.photobucket.com/user/BigBeard1979/library/?view=media#/user/BigBeard1979/library/?&_suid=136181706399008385822650027153"]http://s1339.beta.ph...385822650027153[/url]
Bank transfer preferred.
£55 posted to UK mainland.
See feedback forum for happy customers - I pack pedals very well and send 1st class.
Thanks for looking