If mass produced and copy machine or printer was used all you need is a loupe or magnify glass. There will be a pixel pattern . It's one way we check for counterfeit artwork, money and such. Even if the original was hand filled the pixels will still show up. Now if they used a professional printer service. It could be a different story.. I know that Biden and Harris had done business with printing companies in most of the states because I've seen the receipts. Follow the money. FEC is very revealing.