This is Detective Comics 7, published by Mimosa (SA Magazine Co) +/- 1962-3.
It reprints the cover and both stories from DC Comics' Detective Comics 313 (1962).
"The Mystery of the $100,000 Treasure Hunt!"
Martian Manhunter: "The Wizard who Conquered J'onn J'onzz' "
Also reprinted is this story from DC Comics' Detective Comics 236 (1956):
Roy Raymond: "The Magic Tablecloth"
32 pages, glossy cover and black-and-white newsprint interior pages.
These titles were printed in a smaller size (265x178mm) compared to the original DC Comics title.
The printing reproduction from the original was very good quality.
Here is the cover of issue 7 and DC Comics' original cover:
Mimosa Detective Comics Series