MIT 330E extended plus terminator questions???

Can anyone tell me how old these cables are? Are they any good? What current MIT model would they compare with? What would a one meter pair be worth today? thanks for any help that you can provide.
I've seen this cable from time to time. I don't think it ever caught on. As I remember it had a pretty good price tag on it. As a rule any 330 cable is worth around $150.00 per pair balanced $100.00 RCA. That's the most I'd pay just to be on the safe side.

I would rate these cables about the same as any MI-330. A couple notches below the shotgun line
Thanks for the info Glen.