Detective Comics DC Comic Book #606

Detective Comics DC Comic Book #606
Detective Comics #606, 1989, Part 3 of the 4-part 'Mudpack': Have the Clayfaces finally succeeded in driving Batman over the edge? Written by Alan Grant, with art by Norm Breyfogle and Steve Mitchell. Cover by Breyfogle.
"This autograph is certified by a 20 year plus member of IADA (International Autograph Dealers Association) , UACC (Universal Autograph Collectors Club), IACC - International Autograph Collector Club), Manuscript Society, SAG (Screen Actors Guild), Southern California Motion Picture Council, APS (American Philatelic Society), ASCC (American Society Of Check Collectors), AFDCS (American First Day Cover Society), Hollywood Heritage Museum, and the Golden State Boxing Association. Additionally a member of the British Autograph Club and German Autograph Collectors Club. The COA issuer has the following credentials: UACC - Autograph Appraisal Course. UACC- Autograph Authentication Course. US Army CID Handwriting Program