How could you know that the one million dollar paper money of 1988 is original or fake one?

Answer 1

To what I can find, there never was a 1 million dollar paper money note. I remember reading once in the Guinness Book of World Records, that the highest US Bank note ever printed was a $10,000 bill, but their website doesn't really have any kind of search engine for records, and I not longer have that book. I did find several references on the internet to $10,000 bill being the highest, and one stating that there was a $100,000 bill, but the largest circulated bill was the $10,000 bill.