These photos document the OEM clear cad plating finish of the Scheel seat rails https://pbase.com/9146gt/image/22229315 (this part is over 45 years old!). The quality of the original plating of that era is very difficult to duplicate today. I'll rephrase that, "I can't seem to find a good plating company that can deliver the same product, results that last!"

For the record, and in case you're wondering, the Scheel seat rails were attached to the Scheel seats using 5mm slotted cheese-head bolts https://pbase.com/9146gt/image/42358518