Droopy, Master Detective Signed Publicity Cel. 
(Hanna-Barbera, 1993). 
This animated series was a spin-off from Tom & Jerry Kids. Here is a way-cool hand-painted publicity cel with the show's main logo, seen in the opening credits. The cel is hand-signed by Bill Hanna (1910 - 2001) and Joe Barbera (1911 - 2006).