X-Men #50 CGC 9.0 2nd appearance Lorna Dane Polaris, Mesmero; Origin of Beast; 1st Classic X-Men Logo by Jim Steranko (Cert 6009)

Why it's Hot:

• 2nd appearance Lorna Dane, daughter of Magneto who later takes the name Polaris
• 2nd appearance of Mesmero
• Origin of Beast, his birth and cause of mutation
• First use of the classic X-Men logo, designed by Jim Steranko
  

Synopsis:

Mesmero appearance.