Detective Comics #400 Cover Color Guide Original Art (DC Comics, 1970)Landry Pop Auctions4.3(29)$1,0004 days Left
BATMAN #171 1ST APP RIDDLER IN SILVER AGE ~3.5/4.0Florida Estate Sales Inc.4.3(483)$110(1 bid)Oct 3, 2026
Batman #139 1st Appearance of Original Bat-Girl Betty Kane (DC Comics, 1961)Stanley Gibbons Baldwin’s4.3(3)£100(1 bid)6 days Left
DETECTIVE COMICS #296 1ST APP PLANET MASTER - DC COMICSGreat Canadian Auctions4.1(875)CA$5(1 bid)2 days Left
