This 2012 Zvex One of One Fuzz Factory Pedal is in Very Good condition with normal signs of handling and use.  Custom model, one of one.  Signed and dated on the back (see photos).

FROM ZVEX:

Packed with knobs that let you control everything from tight, radically fuzzy sounds that gate off instantly when you stop playing, to intermodulating oscillations that fight for control of your guitar as your notes decay, to shortwave radio sounds, ripping velcro and octave-like fuzz.