Bureau of Engraving and Printing, United States. Date – Series 1985. The Federal Reserve Bank of Boston (A Prefix), and Federal Reserve Bank of Richmond (E prefix). Don’t miss your chance to snag this beautiful and special banknote at a great price! These are old vintage series 1985 100 dollar bills, with the serial number prefixes A and E. They are in amazing excellent. Thanks for looking and have a great day!