Horn push button. Complete and serviceable. Terminal screws need freeing off. There is a split on the base which could be easily repaired with silver solder or leave as is.
Armstrong Siddeley preselect gearbox. Only used for 8 laps at Goodwood Revival in 2017 following a complete rebuild by Tom Dark engineering. Standard ratios, not close ratio. Converted to run an open prop shaft (eg MG) rather than torque tube. I have a lid mounted selector also with the gearbox.
Volumex Supercharger at fitted to the MG Bellevue until summer 2017, it has been speeded up to run at 0.7 faster than engine speed giving a boost pressure of 1.1 bar. Has rear chassis mounting bracket and input shaft. Car is now fitted with an original type Marshal blower so this is no long needed.
New Old Stock ignition switch for 2 magnetos, 4 positions: BOTH L R OFF, can also be used for just one magneto, round face is 80mm diameter, complete perfect condition ready to use, happy to answer any questions, can post worldwide.