This shouldn't be taken as a guide since I didn't document all the parts, I just hope to help other people that find a rusty keyboard like the one I found.
This was part of a haul where I got 9 IBM 5251 (7 keyboards, 1 with broken case) + IBM AS/400 (weighs something like 120kg) + Ericsson Twinax terminal + IBM 5170 + IBM Model M (Silver Badge, both normal & 122) + Strange clone boards
What am I going to do with all this stuff? I'll try to restore as much as possible (with also the help of some friends) and donate a few of them to my school museum, or maybe other museums
Step 1: damage assessment