This issue is a variant of Marvel Masterworks: Captain Marvel (Marvel, 2005 series) #1 [Regular Edition].
Reprints Captain Marvel stories from Marvel Super-Heroes (Marvel, 1967 Series) #12-13 and Captain Marvel (Marvel, 1968 Series) #1-9. Volume 50 in the Marvel Masterworks Library.
One page illustration of Mar-vell vs. Namor, taken from the cover of Captain Marvel #4
A four page article by Roy Thomas, detailing the creation of Marvel's Captain Marvel character.