Check out this rare Vibra Chorus from Shin-Ei. Here on consignment and sounding fantastic, this unit predates the famous Uni-Vibe that Jimi Hendrix favoured. It uses optical circuitry to create a sound all of it's own, away from standard chorus or vibrato tones. Other notable users include David Gilmour and Robin Trower.  It's in fully working condition, oozes vintage mojo and is seeking it's new owner.