Collector assembling a framed GM design-history collection, seeking authenticated autographs of: Chuck Jordan (Cadillac/Eldorado), Bill Mitchell (GM Design VP 1958–77), Dave Holls (Chevrolet studios), plus Irv Rybicki and Vince Piggins. Loose/flat items preferred for archival framing — letters, photos, documents, signed books. Already authenticated only: PSA/DNA, JSA, Beckett, or established-dealer LOA with lifetime guarantee. DM with scans and price. Discreet, serious buyer.See More