DETECTIVE COMICS #230 CGC 4.0. 1ST APPEARANCE OF MAD HATT (JERVIS TETCH). ITEM RECEIVED WILL BE OF THE PICTURES SHOWN. The item "Detective Comics #230 CGC 4.0 1st app Mad Hatter (Jervis Tetch)" is in sale since Friday, April 3, 2020. This item is in the category "Collectibles\Comics\Silver Age (1956-69)\Superhero\Batman". The seller is "hannanguye_6" and is located in Dublin, California. This item can be shipped worldwide.