The Avengers #51, Apr 1968 original issue.
         $400 + S/H, VERY FINE condition
Roy Thomas - writer
John Buscema - artist
George Tuska - inker
The Avengers #52, May 1968 original issue.
                   $195 + S/H, VG condition
                               Roy Thomas - writer
                               John Buscema - artist
                               Vince Colletta - inker