1961 Tower Constellation after a thourough Cleaning

 Is a freshly polished typewriter:
 I removed the plastic keytops (except for the "function keys"--Margin Release, Tab, Backspace, Shift and Lock keys.) and soaked them in a mix of Orange-scented Palmolive Antibacterial dish soap and water. Palmolive cuts through every yellowing agent, from nicotine stains, to general grease. I then took off the body panels, and soaked them in the same mixture. I dried them off, and glued felt inside them (while the top-of-the-line Smith-Coronas of the period had sound-dampening material, the top-of-the-line Sears portable, the Constellation, did not have any.
Notice the yellow key on the far right of the keyboard. This is the "before" picture of all of the other keys.