HP-71B ver 2CCCC - Anyone ever have one?

[MikeSD]

Years ago, I came across a version 2CCCC. It was the only one I ever saw. And I've owned hundreds of 71B. It was mint condition. But a few minutes after I discovered it was a 2CCCC version, it died. I opened it up and the zebra strip was toast.

Because of the physical condition, I decided against wiring it directly. I thought, maybe I'll find a crappy 71B plastic back that I could slavage the zerbra strip.

But in the intervening years, I lost track of which top half was the 2CCCC. I still have 2 top halves in mint or near mint condition. And a couple of bottom halves. Not sure which goes to which. And apparently, at some point I did some soldering to the zebra connector.

Maybe it's time to go back and try and get these working.

Questions:
1) Is there a way to identify a 2CCCC version by visual inspection? The serial number is on the bottom half, so if the version goes with the top half, the serial number won't help. But it might tell me which bottom half to use.
2) Is the version related to the top half, or bottom half, or both?
3) Can the 2CCCC version be used with any plastic half bottom?
4) Will solder on the zebra strip connector, affect the connection, if I do find a zebra strip?
5) Is there a listing of the pinouts for the zebra strip connector?

I do, now, have a 2CDCC 71B, with mushy key. But I'm leary about opening it to check the zebra strip. I don't want to wind up with 2 non-working 71B