Malaysia 2013 $1 ZA 0000033 PMG 66 EPQ

***Another Bo Derek-like perfect 10 banknote and perfect it should be as it's made of polymer or if you want, plastic, and as such should deserved to be graded as PMG 70 EPQ.
But, all it could get is PMG 66 EPQ. There is nothing imperfect with this banknote as all of its 4 corners are as sharp as hell & the note is as flat as the globe, but, why then, only a 66?
Maybe the many "Sifus" out there could be a source of enlightenment....