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.
Original Molsheim Locking Petrol Cap.This is the only one I have ever seen.The outer cap fits over, and locks into, the inner cap thus securing the petrol tank.