Treasures from the Disney Comic History Vault… From the Worldwide Disneyana Specialists of Saturday’s Toys. Original Walt Disney Comic Color Separation. Original Publication: Disney Magazine (Issue #5; September 1975). Subsequent Publication: Gold Key Comic – Walt Disney Showcase #38 (1977); along with several other European comic publications. Feature Project: Mickey and the Sleuth (series); The Great Violin Case (chapter). Acquisition Source: Disney Auctions (note: COA has incomplete project references). Disney Auctions Sale Date: July 18, 2003. Disney Auctions #: DA06931. Artist / Illustrator: Al Hubbard. Embossed COA: “Disney Auctions Certificate of Authenticity”. Medium: Ink and paint on acetate; backed by illustration board. Project Sponsor: Procter & Gamble products. Original comic book production page from. “Mickey and the Sleuth, “. Specifically featuring a 100% black line and color separation proof. Mickey and the Sleuth (a 1970s Disney comic series parodying Sherlock Holmes, where Mickey acts as the assistant to the inept “Sureluck Sleuth”). This page features the College of Criminal Knowledge, a front for the recurring antagonist, Professor Nefarious, alongside his henchmen Fliplip, Sidney, and Armadillo. Stories from this subseries were widely published by Disney Magazine (sponsored by Procter & Gamble in 1975) and by Western Publishing under Gold Key’s Walt Disney Showcase line in 1977. The bottom margin reads “100% Black / Color Separation, ” which indicates the top proof was printed using the black line art layer (the “K” in CMYK process printing) alongside basic flat guides to test alignment with the color separation. Target crosshairs on the left and right margins serve as registration marks, ensuring that successive color plates aligned perfectly during the printing process. Good condition; with signs of prior wear during production and subsequent long-term storage.