Up for sale here is this vintage 1971 Stackpole 500k / 50k ohm dual concentric potentiometer. This is a linear taper pot. It is labeled "P0106 304-7131" on the side. The "304" means this was made by Stackpole and the "7131" means it was made the 31st week of 1971. This is a dual concentric pot, so it has one shaft inside the other that can be adjusted separately. One section is 500k ohms (measures 646.1k ohms) and the other is 50k ohms (measures 55.18k ohms). This has a power switch attached to the back, so when you turn the pot initially it will turn on the power switch.

The power switch is marked 1A 250V and would be fine for most tube amplifiers. This is guaranteed to work great for you, though it may need some Deoxit. The terminals have a little vintage solder and wire bits on them. This is a pretty rare potentiometer and would be great on your guitar amp. 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 a number of other vintage parts, collectibles, Magic cards, and vintage electronics listed--feel free to take a look!