Many Ghosts of Doctor Graves #53 comic book fine 6.0 $6.00 Many Ghosts of Doctor Graves #48 comic book fine 6.0 $6.00 Many Ghosts of Doctor Graves #57 comic book fine plus 6.5 $3.50 Ghost Stories #11 comic book fine plus 6.5 $10.00 Centurians Powerxtreme #1 comic book mint 9.8 $4.00 Challengers of the Unknown #44 comic book good/very good 3.0 $6.00 Challengers of the Unknown #42 comic book very good plus 4.5 $9.00 Challengers of the Unknown #49 comic book very good 4.0 $8.00 Challengers of the Unknown #50 comic book very good/fine 5.0 $10.00 Challengers of the Unknown #52 comic book very good/fine 5.0 $10.00 Challengers of the Unknown #87 comic book very good/fine 5.0 $3.50 Challengers of the Unknown #83 comic book fine 6.0 $4.00 Challengers of the Unknown #82 comic book fine 6.0 $6.00 Challengers of the Unknown #70 comic book fine 6.0 $6.00 Challengers of the Unknown #66 comic book fine 6.0 $9.00 Challengers of the Unknown #84 comic book very fine 8.0 $6.00 Challengers of the Unknown #1 comic book mint 9.8 $5.00 Challengers of the Unknown #4 comic book mint 9.8 $4.00 Challengers of the Unknown #5 comic book mint 9.8 $4.00 Batman's Detective Comics #439 comic book good 2.0 $6.00