This is Greek MAD magazine number 0 (zero) of the second edition. It was made for the publisher and editorial members of the Greek MAD, only. The purpose was to create a test MAD issue before the publisher started the second edition of the Greek MAD edition.
This issue could be one of the rarest foreign MAD magazine, because only a handful copies were created and it was never sold to the public. After collecting more than 25 years foreign MAD magazine I've never seen a second copy.