All US dollar bills and notes should have two matching serial quantities on both side of the note. Clearly, these serial figures will have to match if not the note is fake. It's also wise to watch out for irregular spacing and other this sort of errors in the printing https://stock-fish-of-saithe35677.link4blogs.com/56555562/a-simple-key-for-counterfeiting-money-in-the-usa-unveiled