KNOBS, Phenolic, 3-Wing ZA/CAN 4657
This KNOBS assembly has now been cleaned and polished. More of the indicator paint had survived under the dirt than I had expected, but it is not showing any signs of being luminous. It could either have simply grown old and failed, or it was not luminous to start with, but I suspect the former.
The greasy soot had even infiltrated under this KNOBS assembly onto the switch shaft itself, so it received a cleaning as well and now the KNOBS is a nice snug fit sliding both on and off the shaft.
I will redo the luminous paint when the flat white arrives next week.
David
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