A signed LP cover (vinyl included) from the National Lampoon’s Vacation (1983) soundtrack, autographed in-person by Chevy Chase, who portrayed Clark Griswold. In-Person Signature. Authentication: PSA/DNA [Professional Sports Authenticator / DNA Authentication Services] Certification Number: V26593 Collector Note: This signed soundtrack LP commemorates Chevy Chase’s iconic role as Clark Griswold in National Lampoon’s Vacation (1983), the comedy classic that launched a beloved franchise. In-person authenticated autographs like this are highly collectible, especially on soundtrack vinyl tied to such a memorable film. A display-ready, standout collectible from a legendary comedy actor.