Up for sale here is this NOS vintage Mullard mustard capacitor. This is marked 2200 pf (.0022 uf) 400v, and will test good. This is an incredibly high-quality cap and is guaranteed to 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!