Round 2. This time with a Gem portable adding machine from 1941 (I have the original box, receipt, and warranty card) that's rusty *and* has two digits out of time with the rest of the register.
I fixed the timing but this is as clean as I dare to make it right now. It got wet in storage some time in the past and rust worked its way under the black paint and through part of a screw. The rest of the paint is very flaky. I removed as much surface rust as much as I dared.
