A used Jaguar MK2 Lucas 22907 (22906) C42 power steering dynamo Jaguar part number C16930, tested and works as it should (see video) however it would be wise to have this refurbished before fitting to your classic.
Also fitted to the S Type

Note.
In the manuals this is listed as Lucas 22906 but for some reason it has 22907 stamped on the casing, maybe an off day at the lucas factory.... on the day of manufacture but be assured this came off a MK2