I cannot see any marks from use at all. Please check photos to make up your own mind but I would describe it as mint!

Three different harmony modes (determined by the chords you play on guitar and the notes you sing)

Vocoder

Octaves

Reverb

Presets (up to 9).

With box, correct ehx power supply (I inadvertently photoed the wrong one, I can photo the correct one if you wish), manual.

Perfect working order.