99.99% Pure Silver Scooby-Doo Design Official Licensed Product SCOOBY-DOO Themed Presentation Packaging Limited Mintage €“ 5,000 Numbered Certificate The enduringly popular SCOOBY-DOO cartoon series premiered in 1969. The series featured four teenagers and their rather cowardly yet always loyal Great Dane, SCOOBY-DOO. The talking dog helps his friends solve €œsupernatural€ mysteries, often with the added incentive of his much-loved cookies, Scooby Snacks.