Summary
"Weird Science-Fantasy was an American science fiction anthology comic, that was part of the EC Comics line in the early 1950s. Over a 14-month span, the comic ran for seven issues, starting in March 1954 with issue #23 and ending with issue #29 in May/June 1955. The comic, published by Bill Gaines and edited by Al Feldstein, was a merger of two previous bi-monthly titles, Weird Science and Weird Fantasy, which ran from 1950 to 1953, both ending at issue #22. Because of the losses suffered from those two comics, Gaines and Feldstein combined the two into a single comic, published quarterly and priced at 15 cents. The price would be lowered back down to 10 cents after the first two issues. The comic reverted to a bi-monthly schedule with issue #27 in January/February 1955. In the summer of 1955, there was yet another title change as Weird Science-Fantasy became Incredible Science Fiction for the final four issues"--Wikipedia.
Variant and related titles
Title on spine of case: Complete Weird science-fantasy/Incredible science fiction
Incredible science fiction (New York, N.Y.)