On the modern collection bills, the microprinting are available on Franklin's collar, the bottom of Franklin's portrait, and to the correct from the brown quill. Microprinting was initially extra on the $100 bill in 1990. I exploit the traditional or collector grading explained in Amassing Confederate Paper Money as well https://ab-fubinaca70122.oblogation.com/32639282/counterfeiting-money-in-the-usa-secrets