Any hints on how to safely remove the ibm sticker without damaging it?
I have removed several of the oval stickers using naptha, which is an excellent product to remove many adhesives, especially tape and stickers.
It be harsh on plastic, so I work quickly. Drip a few drops into the depression where the sticker is installed, wait perhaps 10-20 seconds, and start peeling it up with a sharp knife blade. Be careful not to bend any crease in it.
After it is separated, wipe the sticker and the keyboard with fresh naptha to remove all adhesive residue, then wash with soap and water to remove all naptha residue.
I have never damaged either surface, but it is certainly possible. Work quickly and clean thoroughly.