What is the Mallory number for a replacement vibrator in a 1950 truck radio? 7239124 is the Chevrolet part.

I suggest you place a solid state vibrator in your radio, provided the buffer condenser is replaced.

Send me a PM if you have questions.

I want it to "hum" corectly for the full authentic experience so I can feel like a little kid again. Humming AM radios remind me of my childhood. I like to keep spares around as well, the one in my radio is probably fine. I know I'll probably have to clean the contact points on any old stock ones I might find.

Your solution is viable.