Scooby-Doo and the Witch's Ghost Original Production Cel Signed by Bob Singer and Joe Barbera: Scooby, ShaggyScooby Doo, Shaggy MEDIUM: Original Production Cel on Printed BackgroundIMAGE SIZE: 10. 5"X9" PRODUCTION: Scooby Doo and the Witch's Ghost, 1999SIGNED: Hand Signed by Bob Singer and Joe BarberaSKU: IFA15420 ABOUT THE IMAGE: The Hanna Barbera cartoon, Scooby Doo, Where Are You? was launched in 1969 and has had the longest run of a cartoon series. Over the years its been in 19 TV series (on CBS, ABC, the WB, Cartoon Network and Boomerang) and more than