I came across this in a clearance sale list, looks like a replacement for the most likely damaged part of a saddle other than the leather.
Riveting can be a big pain in the neck for those who might be willing to try it, and I've still got a "Pro" replacement top still waiting all these years to be riveted to an old saddle frame.
Maybe one of BikeForums' resident C&V saddle crafters would be interested in these:
Brooks England Professional Saddle Frame Assembly BYB 162 Chrome | Parts & Accessories | Saddles | All Products | Bikewagon