This volume pedal is in Very Good condition. It will clean up nicely if a Customer so desires. This pedal is of 1950s or 1960s vintage. Disassembling to view the pots codes would be no guarantee that the pots were not changed out; So in keeping with vintage instrument industry standards I did not open this pedal up to check it's pots codes. I would be delighted to do so for a purchasing Customer.
------- oOo -------
Volume and tone are controlled by potentiometers for each inside the pedal. Volume is controlled like other volume pedals, ...like a car's gas pedal. Tone is controlled by moving the top treddle toward the left for bass tones and towards the right for treble tones. They can both work simultaneously. The pedal works fine and with no noise.
Rotation of the top treddle towards bass tones is shown in the picture below.
------- oOo -------
The brownish coloration shown below on places on the pedal (examples shown below by color doed arrows) is differing thicknesses of residue of a corrosion cutting & inhibiting oil I applied to prevent rust from breaking out of mild scratches and pitting on the pedal's chrome.
This pedal's chrome will buff out nicely. If you don't have a buffing wheel or dremel, then toothpaste on brown bag paper is excellent for hand buffing / polishing.
Dark spots shown below on the top treddle are spots of rubber that over the years have vulcanized into the glue that secures the top rubber pad, and many years of moderate pedal action / use mashed the rubber impregnated glue out from under the rubber pad. It will clean off quite easily goo-be-gone type citrus cleaners, or laquer thinner, acetone, xzylox, etc.
In keeping with vintage instrument professional standard practices, I do not clean up vintage gear unless a buying Customer desires / requests I do. I will be delighted to do so expertly at no cost should a buying Customer desire.
Again, the discolorations on the chrome are corrosion inhibitor residue protecting the pedal from corrosion:
This is the kind of mild scratches and pitting that the corrosion inhibitor was applied to keep corrosion from breaking out of:
This close-up shows the protective coating and typical minor pitting that will buff out nicely:
This discoloration is also thicker spots of the corrosion inhibitor coating oil. The corrosion inhibitor also checked minor corrosion on the jacks nuts which will also clean up nicely:
The type of rubber on the top treddle is available in most better hardware stores (tool box liners, heavy duty shelf liner, etc, and can be used to make an excellent modification by cutting a pad to fit the bottom access panel; Which additionally helps the rubber feet prevent the pedal from sliding on smoother surfaces: