This is Giant Batman 19, published by Mimosa (SA Magazine Co) +/- 1963-1964.
It reprints the cover and both stories from DC Comics' Batman 151 (1962):
"Batman's New Secret Identity"
"The Mystery Gadget from the Stars"
Also reprinted is this story from DC Comics' Batman 109 (1957):
"The 1,001 Inventions of Batman"
Also reprinted is this story from DC Comics' Detective Comics 234 (1956):
"Batman and Robin's Greatest Mystery"
48pages, glossy colour cover, black and white newsprint interior.
Here is the cover of issue 19 and DC Comics' original cover: