It all comes out in one unit
If you have original knobs
There is a set screw in the knob that releases it from the shaft
Then the tone and dummy knobs slide off
And then you can unscrew the nuts that hold the shafts in place
The two bolts at the bottom come out
And the whole radio is removed with two wires power and dimmer light to disconnect
After market replacement knobs from even 50 years ago are press on and you only have to pull to remove
Send photos and we can let you know what ya have
-s