I picked one up local a few years ago that I still have to get around to recapping. Even with all the tired caps I was still able to get it to work to some extent.
Quality wise it's excellent. The solid wooden cabinet is all nice and solid,
The push buttons selectors are very well built.
It'll test anything a Heathkit, Solar, Knight will do. As much as I like the Heathkit C3 I would say it's built far better.
You'll also have to do a recap on yours. It doesn't look too bad to do theres a few old dry electolytics in there for filters and a bunch of wax paper caps
Here's a manual I found for them.
http://hallmanlabs.com/wp-content/up...ers-manual.pdf
The 12A7 is 10 bucks or less if you shop around.