Up for sale here is this vintage "Sylvania Adapter Base" CRT test socket adapter. It is marked 935 or 9356 or something like that. This is in great shape 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!