This Seat Comp,double is the most expensive of the items that make up this Seat assembly.
Parts such as the Seat: Ring,seat Lock, Nut,flange,6mm, Stay,fr.seat, Bolt,seat Lock are included in the Cx500 1980 (a) France Seat parts fiche.
On this parts fiche the Nut,flange,6mm is the most specified component.