Marvel Premiere is an American comic book anthology series that was published by Marvel Comics. In concept it was a tryout book, intended to determine if a character or concept could attract enough readers to justify launching their own series, though in its later years it was also often used as a dumping ground for stories which could not be published elsewhere. It ran for 61 issues from April 1972 to August 1981. Contrary to the title, the majority of the characters and concepts featured in Marvel Premiere had previously appeared in other comics.
Cover for Marvel Premiere #1 (1972) featuring Adam Warlock. Art by Gil Kane and Dan Adkins
Marvel Spotlight is a comic book anthology series published by Marvel Comics as a try-out book. It stood out from Marvel's other try-out books in that most of the featured characters made their first appearance in the series. The series originally ran for 33 issues from November 1971 to April 1977. A second volume ran for 11 issues from July 1979 to March 1981.
Marvel Spotlight #1 (November 1971) featuring Red Wolf. Cover art by Neal Adams.