Very rare vintage pedal. Works great. Sold as is.

Some information about this vintage pedal:

The Texas Square face was originally designed as a replacement for Stevie Ray Vaughn's fuzz faces, which were always dying. Cesar built his circuit into one of SRVs dead fuzz face boxes and Stevie used it until his unfortunate death. 

The square face is similar to the Dallas Arbiter Fuzzface, has Volume and Fuzz knobs, but comes in a small MXR distortion+ sized box. They have a DPDT switch for true bypass. Here is some info from Cesar : 

The square face is NPN not PNP..it comes with two germaniums but it has transistor sockets and two silicons are included for more gain. They can also be combined, for different tones. Changing positions will also help!! You can really hear it on the SRV album "IN STEP"...cesar... 

They are now powdercoated instead of painted, which is stronger and looks better. Also the inside is coated so it should not corrode.