Thx much for the replies.
Synthparts, please disregard the PM I sent. I just realized (duh) there's a separate and similar knob on the back of the Taurus, which is grooved and highly likely identical to the Satellite back knobs you posted. Turns out that doesn't fit the smooth shafts on the Taurus front panel after all, so save the knobs for a desperate Satellite restorer.
Schmidtdc, thx, yet I'm unfamiliar w/ the Alco catalog. Possible someone can provide a link, please?