Welcome to All Music Inc's Musicdungeon, you are looking at a really cool piece.
This is the Walrus Audio Jupiter Fuzz Electric Guitar Fuzz Effect Pedal.
The Jupiter is a true bypass fuzz pedal inspired by the desire for gritty, thick and loud fuzz. 
Fuzz pedals tend to emphasize specific frequency ranges, which is both a positive and negative attribute. 
The Jupiter’s controls allow you the ability to dial in the right amount of fuzz with the right tonal quality to either stand out in the mix, or ride it out with the drums and rhythm. 
It includes a Mode switch that changes between three different clipping diode arrangements, providing more options and combinations of fuzz and tone and a Bass cut toggle switch for dialing in low end.
This Jupiter is in very good overall condition as you can see in pics- typical small marks from normal use.
Tested and works as it should.
This is your chance to add an incredible fuzz to your rig.
Don't pass this by!