Late last summer I picked up an IBM Selectric Model III from a local thrift store. Not really a keyboard but it certainly has that IBM heritage. Needed some work to get running, it had the usual broken transport pulley, dirt and foam that turned to goo. After a cleaning, lubrication and a new pulley installation it was back running again. It's been working fine and I've even picked up a few more type elements for it since then. Feels like the contacts in the power switch are wearing out now but that's another easy part to replace.
Guts during the repair
After getting it going!