This is Giant Woeste Weste 5, published by Mimosa (SA Magazine Co) in 1962. Mimosa produced reprints in English, and some Afrikaans language translations.
It reprints this story from DC Comics' Western Comics 53 (1955):
Wyoming Kid: "The Last Run of The Prairie Prince"
Also reprinted is this story from Dc Comics' Hopalong Cassidy 113 (1956):
Hopalong Cassidy: "The Shadow of the Toy Soldier"
48pages, glossy colour cover, black and white newsprint interior.
The Mimosa Cover image is not related to the issue's content.
Cover of Issue 5: