@LilianaElena
This post is part of the book Beginner’s Guide To Collect Paper Money, check it out at Banknote Heaven.
Oftentimes the printing company's name will appear on a banknote in very small letters (sometimes abbreviated also) usually in the white frame area at the bottom of the bill.
Some collectors look for notes printed by American Banknote Company or Thomas de la Rue.
The banknote below was printed by American Banknote Company
