Superman Superband #20

In "Krise auf drei Ebenen!", Alexei Luthor sets a deadly trap by forcing Earth I and Earth II to occupy the same space, threatening to destroy both worlds. With the help of Alex Luthor from Earth III, the two Superman counterparts must work together to stop the catastrophe before it’s too late. Written by Marv Wolfman and illustrated by Rich Buckler, with inks by Dave Hunt and colors by Carl Gafford, this 1983 issue features a cover by Rich Buckler and Dick Giordano.