A signed cassette tape, autographed in-person by Joan Jett. Rock icon and frontwoman of Joan Jett & the Blackhearts. A unique and increasingly hard-to-find format for autograph collectors. In-Person Signature Authentication: JSA (James Spence Authentication) Certification Number: CJ50310 Collector Note: Signed cassette tapes are far less common than photos or albums, making this a standout collectible. A killer piece for any rock or Joan Jett fan.