Volume 1 #18. "X-Cutioner's Song Part Twelve: Ghosts in the Machine" Not sealed in polybag.
Marvel Comics. January, 1993.
Writer(s): Fabian Nicieza
Artist(s): Greg Capullo, Harry Candelario, Marie Javins
Notes:
Appearance: X-Men, X-Factor, Mister Sinister
Cover Art: Greg Capullo, Harry Candelario
X-CUTIONER'S SONG crossover