Detective Comics #400 Cover Color Guide Original Art (DC Comics, 1970)Landry Pop Auctions4.3(29)US$1,000Sep 9, 2026
Batman #139 1st Appearance of Original Bat-Girl Betty Kane (DC Comics, 1961)Stanley Gibbons Baldwin’s4.3(3)£100(1 bid)Sep 11, 2026
Batman #179 CGC 4.5 2nd Appearance of Silver Age Riddler (DC Comics, 1966) Off-White to White PagesStanley Gibbons Baldwin’s4.3(3)£60Sep 11, 2026
