Up for sale here is this NOS vintage 1955 Mallory dual concentric potentiometer with a power snap switch attached to the back. I believe this is for a car radio, but it could probably be used on a guitar amplifier or similar. The two sections are 10k ohm audio taper (rear) and 25k ohm linear taper (front). The center shaft works the 10k section and the outer shaft works the 25k ohm section. The 10k section has the usual turning for a potentiometer, about 12 o'clock to 10 o'clock, but the 25k section only has a small amount of travel in it, maybe 1/3 of the usual amount.

The power snap switch has two terminals and is marked 7.5A 20VDC. This should translate into about 1.25A 120VAC, possibly more, so this should be fine for a smaller tube amplifier. This is new and unused and is guaranteed to work great for you, though it may need some Deoxit. Please see my pictures for details.

US shipping and handling is $5, and international is $18, no matter what quantity you buy. All my small parts are set up for combined shipping, so just use the "add to cart" feature and then check out all at once, and it will combine shipping. If you have any questions, please ask.

I have more pots and other vintage electronics listed--feel free to take a look!