Up for sale here is this lot of 7 NOS vintage Elmenco 36 pf 500v silver mica capacitors. They will test very close to their marked rating. These are high-quality silver mica caps, and will work great for you. Please see my pictures for details.
US shipping and handling is $5, and international is $18, no matter what quantity you buy. All of my small parts are set up for combined shipping--just use the "add to cart" feature and then check out at once, and the shipping will be automatically discounted. If you have any questions, please ask.
I have more capacitors and other vintage electronics listed--feel free to take a look!