Here is what Mike says... 

‘Tobacco Tin Fuzz Pedal. Its a Tin of Fuzz. Inside this Old Holborn tobacco tin is a single transistor Fuzz circuit using an MPSA13 transistor with BAT41 diode.. (for those that care.) The pedal runs on either internal 9v battery (supplied) or external 9v standard pedal power (not supplied). This thing is a bit of a Distortion/ Fuzz crossover.’