X-MEN #132 APRIL 1980 CGC 9.6 NM+ SIGNATURE SERIES.

Pricing & History
Marvel. Jason Wynegarde revealed as Mastermind. Hellfire Club (Sebastian Shaw, Donald Piece, Harry Leland and Mastermind) appearance. Signed by Chris Claremont in black felt tip pen on front cover (May 19, 2018 at Comic Con Revolution 2018). Chris Claremont story. John Byrne and Terry Austin cover and art. White pages. Duke Caldwell Collection.