Includes spare switch that selects the taps on the coil. What more than likely happened, is the user tried to tune an antenna with a transmitter at full power.

If the tuner is way out of adjustment, the voltages across the switch contacts and the variable capacitors are excessive. This poor operating mode will arc over causing the capacitor plates to burn, and switch contacts to burn and melt.

All of the case screws are missing.

Item is untested and sold as is.