First 70's VOX WHA V846 Made in Italy Nice conditions with RED FASEL  100% original All working well  Code EF104

The JEN produced Vox V846 Wah-Wah was frequently equipped with a red Fasel inductor (shown at right). Vox wah pedals from JEN also featured white piping around the base of the pedal, similar to the white piping used around the grill panels of Vox amplifiers. In addition to adding a signature Vox styling cue, this piping provided additional clearance for the Fasel inductor to prevent it from striking the base plate.  JEN Vox Wah-Wah and Crybaby pedals featured the original patented two transistor Thomas Organ/Vox circuit design. While many JEN Vox wah pedals were equipped with a Fasel inductor, some featured a metal "trash can" inductor. Vox V846 and Crybaby wah pedals produced by JEN typically do not have serial numbers embossed on their base plates.

https://www.youtube.com/watch?v=wx9X_5c3VmU

The wah wah is one of the best known electric guitar effects in the world, made known by the late Jimi Hendrix who illustrated its potential in “Voodoo Child (Slight Return)” and in Woodstock. Yet the pedal was born almost error as a means to exploit the fame of the Beatles. As Motherboard explains, it was the result of a combination of two different things: the Vox Continental organ and the Vox Super Beatle Guitar Amp, which were "merged" into a new, cheaper and affordable instrument, an amp. for guitar equipped with a pedal borrowed from the organ, able to modulate the expression of the instrument.

Its inventor Brad Plunkett initially thought that the pedal could be useful to saxophonists but it was Vox that bet everything on the guitar, at that time in great ascent thanks to the new lever of post-Beatles guitar band. Starting in 1967, thanks to the flowering of the psychedelic movement, Eric Clapton and Jimi Hendrix learned to take full advantage of it - with often different styles - filling their riffs and solos with wah wah. Just a year later the pedal had already become a must and in that year the legend was born according to which guitarist Earl Hooker invented it. In reality, this is not the case, as we have seen, but his knowledge of the gadget and the complicit title he gave to one of his songs ("Wah Wah Blues") contributed to the spread of this version of the story.