The R/H outer brightwork trim with the seal attached to stop water seeping down into the door frame.
For all cars with wind up windows from about 1980 on, these are the later type with the black protection ends fitted as a safety requirement on new cars.
The original all chrome type as fitted to the Cooper S Mk 3 and many Mk 3's which some believe look better, are cheaper direct replacements.
For matching L/H door moulding, see PAM1015.
The early type mouldings are available as CZH1666 (RH) and CZH1667 (LH).
The clips for either type are sold separately as ADH3809.
These outer mouldings are all interchangeable depending on taste but CZH1666 / CZH1667 look better when using upper door mouldings MS67/68.