Up for sale here is this used vintage 7-pin tube test socket adapter. This is in good shape with light wear, and is guaranteed to work well for you.  Please see my pictures for details.

US shipping and handling is $5, and international is $18. 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 tube sockets and other vintage electronics listed--feel free to take a look!