End of Two Balls Story.
Chugalug, 682al and Hipper,
That shoots me down ! What can't speak, can't lie (I believe they've found the poor pilot (RIP); he didn't get far and must have died miserably).
So they did have two ball indicators. Only question now is - Why? You can only watch one at a time. They must work (unless gravity has been suspended - they're still working). We'll never know. Better leave it alone.
So it means the Camden panel isn't a one-off, any other Mk.IV would presumably look the same; we haven't got a firm ident feature to tie other pics to Camden.
I know when I'm beaten! Let's call it a day!
Danny.