Image of inside of HP71B HP-IL module

[pamphonica]

I agree - they seem to have been removed, maybe to repair something else. Of course this module may well prove to be dead when I put the new fingers on!

There are differences in shape (bending) between your excellent photo above and the technical design drawing. But I can see what shape the contacts have to take, and I expect I can replicate that. I have found some 0.4mm phosphor bronze rods on Ebay that look promising. I will probably have to make up a jig to keep the rods in place while soldering them.

But that's a job for another day. Meanwhile, I hope that a working module will soon be on its way to me. Then I can check things out in the HP71B