This is a genuine Lucas manufactured terminal block and lead for the 25D  Lucas distributors as used on Series II, IIA and III Land Rovers, Rover part number 600329. The Lucas number is 54413549. 

This is not to be confused with the cheap modern reproduction item which is offered by many of the main suppliers.

This will be supplied in a Britis Leyland bag and not the Land Rover one shown in the photos.

If you have any questions please ask.