Mid century vintage 1940s "Astounding Science Fiction" sci-fi magazine from February, 1947. The cover art and article for this issue is "Atomic Power Plant" by John W. Campbell Jr.. 

We don't know anything about grading pulp magazines, but this issue does have wear, age and ragged edges to the cover. There is a "2 7" in ink on the bottom edge of the pages.

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Item No. w22430