This is one of the earliest South African reprint comics. Zebra Publications were the first to reprint DC Comics in 1954.
This is Zebra Publications Superman 4 - the cover is taken from DC
Comics' Superman 73 (1951).
It contains two stories, taken from DC Comics' Superman 56 (1948):
"The Man who couldn't Laugh"
"The Prankster Picks a Partner"
Colour cover, Black-and-White interior, 24 pages.
Smaller than the original comic size - dimensions 176mm x 244mm.
Here is the cover and DC Comics' original cover: