This is a Wattson Classic Electronics SuperFuzz!! This pedal is one of the original Superfuzz clones before they were forced to change the name to simply "Fuzz".
Here is a description from their web-site:
Capturing the precise tone of the original classic fuzz pedals from Shin-ei and Univox was our primary goal in designing the Wattson Classic Fuzz. We spent a lot of time analyzing signals from original Shin-ei and Univox pedals, and it paid off in the end - in spades!
We don't think you'll find any pedal anywhere that captures the tone of those classics better than the Wattson Classic Fuzz, and we're certain you won't find another one that captures the style and beauty of the originals as well as this one.
But we didn't stop there.
The Wattson Classic Fuzz is housed in a 16 gauge steel chassis, tough enough to withstand years of rugged use, with a sandtex powdercoat that has the vintage style with modern durability. We've also added an external DC power supply jack, an LED to indicate when the effect is active, and a unique battery drawer that allows you to replace the battery without opening the chassis."