Up for sale here is this used vintage Circle D ceramic disc capacitor, from the 1960s and Made in USA. This is marked .05 uf 100v and tests right around .038-.042 uf. This is perfect for a vintage guitar, and is guaranteed to work great for you. Please see my pictures for details and test results.

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 capacitors and other vintage electronics listed--feel free to take a look!