To make the repairs I needed to figure out what I was dealing with. The case said “Remington Rand” but I had problems finding the serial number. I finally found the serial number on the right side of the frame under the carriage rail:
Fortunately, there is an online database of serial numbers for typewriters here:
With this information, I was able to identify the year and model. I had a 1948 Remington Rand KMC. This typewriter features the KMC key – Keyboard Margin Control. I found a very informative blog post in which the author Richard Polt had a type-off between the KMC and a similar Royal:
Obviously we had a winner.