This is All-Star Western 6, published by Mimosa (SA Magazine Co) in 1960.
It reprints the cover from DC Comics' All-Star Western 102 (1958):
It reprints two stories from DC Comics' Tomahawk 60 (1958):
Tomahawk: "The Mystery of the Frontier Volcano"
Tomahawk: "The Great Indian Bank Robberies"
24 pages, full-colour, newsprint stock cover and interior pages.
These titles were printed in a smaller size (255x170mm) compared to the original DC Comics title.
This is one of the seven first titles that Mimosa started reprinting in 1959 (Western Comics, Tales of
the Unexpected, Falling in Love, Mystery in Space, Romances, Batman and
Here is the cover of issue 6 and DC Comics' original cover:
Mimosa All Star Western Series