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Corima used solid cork for their early wheels, I think their current pads are still cork based but made from plastic bonded particulate rather than being cut from whole bark. Since they only make one pad, my guess is they will recommend their current pad for their historic wheels. You can buy them here
Cork pads have been superseded in performance by synthetic pads, but that's in conjunction with modern resins and special friction layers in the rim lay up. For older wheels, cork has the reputation of being kinder to the carbon.
Your wheel manufacturer has a recommendation for brake pads. Stray from it at your peril.