Same Story, Different Cover: EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

Left: [Uncanny] X-Men v.1 #28 (January 1967); pencils by Werner Roth; inks by John Tartaglione; letters by Sam Rosen and Artie Simek
Right: [Uncanny] X-Men v.1 #76 (October 1970); pencils by Gil Kane; inks by Joe Sinnott (?), Mike Esposito (?), and/or Frank Giacoia (?); letters by Morrie Kuramoto

(Click picture to shillelagh-size)