A good used Laycock overdrive annulus assembly as fitted to the MK1 & early MK2 & S Types from the Jaguar range, it was probably fitted to other British classics fitted with Laycock std Type A overdrives to but obviously check compatibility before committing to purchase.

Just a bit of staining on the clutch surface but this wont affect the performance or function.

Jaguar part number C11432 Item 10 in the illustration or laycock part number 65600