Yes, these have K-77M, K-55V, and K22EF with the Type E balancing network. I am just beginning to figure out what all that means, but I cracked the backs to take a look.
These are some speakers! I don't think I have ever heard any Heresy(s) or any other old Klipsches before. I've been playing them loud, in a big tall garage, hooked up to a little t-amp and a cheap walkman cdp. They might be the best rock and roll speakers I have ever heard. I read that they lack bass, but I think they do a pretty good job from at least the A string on up on the electric bass. I haven't listened to any double bass things yet.
I guess I'm going to have to study up on refinishing. I'd just as soon they weren't stained black, but I sort of gather that since they are, they'll have to stay that way.