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X-Men #45 Marvel 1968 (FN+) Cyclops Appearance
X-Men #43 Marvel 1968 (FN+) Magneto Appearance - BRIGHT COVER
X-Men #42 Marvel 1968 (FN-) Death of Professor X
Uncanny X-Men #122 Marvel 1979 (NM-) Origin of Colossus (Print Ink Error)
X-Men #41 Marvel 1968 (VG-) 1st Appearance of Grotesk
X-Men #40 Marvel 1968 (VG-) Classic Frankenstein Cover
Uncanny X-Men #120 Marvel 1979 (VF/NM) 1st Cameo Team App of Alpha Flight
X-Men #39 Marvel 1967 (FN) Cyclops Origin - New Costumes
X-Men #37 Marvel 1967 (VG-) 1st App. of Mutant Master
Uncanny X-Men #119 Marvel 1979 (VF/NM) Cameo of Proteus
X-Men #36 Marvel 1967 (VG/FN) 1st App. of Mekano
Uncanny X-Men #118 Marvel 1979 (VF/NM) 1st App of Mariko Yashida
X-Men #35 Marvel 1967 (VG-) 1st App. Changeling - Spider-Man App.
X-Men #34 Marvel 1967 (FN-) Tyrannus & Mole Man Appearance
X-Men #33 Marvel 1967 (VG) 4th App of Juggernaut
X-Men #32 Marvel 1967 (VG+) 3rd App of Juggernaut
Uncanny X-Men #117 Marvel 1979 (VF-) 1st App of the Shadow King
X-Men #31 Marvel 1967 (GD+) 1st App. of Cobalt Man
Uncanny X-Men #115 Marvel 1978 (VF+) Enter Sauron!
Uncanny X-Men #116 1978 (VF+) 1st Mention of Wolverine Healing Power
Uncanny X-Men #114 1978 (VF+) First Uncanny Above X-Men Title
X-Men #30 Marvel 1967 (VG+) Warlock Appearance
Uncanny X-Men #113 1978 (NM) Cyclops Banshee Magneto Wolverine Storm
X-Men #28 Marvel 1967 (VG-) 1st Appearance of Banshee
X-Men #27 Marvel 1966 (VG-) Mimic Joins Team
X-Men #26 Marvel 1966 (FN-) El Tigre Appearance
X-Men #26 Marvel 1966 (FN) El Tigre Appearance
X-Men #25 Marvel 1966 (VG-) 1st App. of El Tigre
X-Men #24 Marvel 1966 (GD+) 1st App. of Locust
X-Men #23 Marvel 1966 (GD-) Count Nefaria Appearance
