This is a genuine Lucas high quality rotor arm, made of low carbon non-conductive resin with a molded rivetless contact.
It is correct for most British 6-cylinder cars up to 1974, including MGC, Austin-Healey 100-6 and 3000, Triumph TR6 and TR250, and Jaguar XK, Mark 1 and 2, E-Type and XJ6.
Part no. GRA102HDRED.