Their conception of a LEM, not too unreasonable. You'd need an atmosphere as thick as Earth's to support lunar mists like these!
This was back when it was thought
Mercury kept one side towards the Sun. Note the quite sharp
transision from sunbaked day side to cold nightside in this picture. Also note
the shadow of the frying pan implying the Sun is high in the
sky. Also the astronaut is sitting on a boulder that the
Sun somehow doesn't "see", a meter or so from the dayside!
And the thick atmosphere making a bright dayside sky. :-)
I realize that some graphic artist at Topps was given this assignment to make a set of 88 cards depicting the space age. Someone who usually did artwork for baseball cards. And it looks like he went to the library and borrowed books featuring Chesley Bonestell's artwork, like Willy Ley's 1949 book _Conquest of Space_.