Overstreet Comic Book Price Guide list this as Movie Classic #12-537-211, but "Movie Classic" does NOT appear on the cover.
There are two versions, one with and one without an ad on the back cover, per Gary Watson, March 2008.
The face of the mummy on this cover is used a year later on a cover as an inset, the credit for which is attributed as "L. B. Cole ? (painting); Vic Prezio ? (painting)" See Universal Pictures Presents Dracula, the Mummy, and Other Stories (Dell, 1963 Series) #1, http://www.comics.org/issue/17990/