This is House of Secrets Giant Edition 2, published by Mimosa (SA Magazine Co) +/- 1963-1964.
It reprints the cover and the following 2 stories from DC Comics' House of Secrets 61 (1963):
"Doctor-7, King of the Supernatural"
"Eclipso, The Genius who fought Himself" (First Appearance of Eclipso)
Also reprinted is the following story from DC Comics' House of Mystery 56 (1956):
"The Laughing Ghost of Warwick Castle"
Also reprinted are the following 3 stories from DC Comics' House of Secrets 4 (1957):
"The Amazing Visions of Abel Innes"
"Master of the Unknown"
"House Haunters, Inc"
48 pages, colour cover, black-and-white interior pages (259x179mm).
Here is the cover of issue 1 and DC Comics' original cover: