Interesting. Did bakelite ever achieve its original design objective or some unintended application like adhesive on Post-it. GONZO.
So Jo does my early 1900 upright grand piano have ivory or Bakelite keys?
Bakelite was invented in 1907 but I have no Idea how long it took to be commercially introduced and what it was first used for.
I have a late 1880s Harmonium with Ivory keys and pull knobs, all very yellowed with time, so if the white keys have turned yellow it is probably Ivory.