Low $610
Mid $1.8k
High $7.8k
  • 1st appearance of Master Mind Excello, a spy with superhuman mental and physical capabilities
  • 1st appearance of Invisible Man, Leonard Gade
  • 1st appearance of Zara, a girl raised in the jungle of Africa
Publisher Timely
Published April 1940
Written By Various Writers
Illustrated By Alex Schomburg