This is the spring clip for the saddle boot lock (UB71113). 1987-2000 Brooklands, Eight Spur, Mulsanne, Spirit, Turbo (VIN 21413-66587)  

This is a good used Headrest Blue / gray color  1966-1976  Silver Shadow, T-series                             ...

Rear Headrest Seat Fixed Standard Style 1990-1996 Brooklands, Mulsanne, Spirit, Spur, Turbo (VIN 31001-58293)  

This is the plastic plug that sits in the slot on the top of the front seat that accepts the head rest. 1977-1980 year models

This is the Pin Detent Roller Front Seat Headrest.  1970-1980 All Models (from VIN 9001-39200)