Altogether, there are a possible 2,499,999,975 serial numbers for each bank! The final letter is used to raise the number of possible bills beyond 99,999,999.Using these digits alone, there would be a possible 99,999,999 bills issued per bank. This number increases sequentially as each bill is printed. The eight numerical digits that follow represent a unique ID number.As there are 12 Federal Reserve Banks, this letter can range from A to L, with A representing Boston and L representing San Francisco. The second letter (or first, if you're looking at an old-style bill) represents the district of the Federal Reserve Bank that your bill was issued from.You can also find the series of the bill printed directly to the bottom-right of the portrait. Provenance: This rarely comes into play, but it is important to mention.
The second letter represents the district of the Federal Reserve that issued the bill there are 12. Series are changed for different reasons, like when there is a new secretary of the treasury, and hence a new signature. If the serial number on your 20 bill is immediately recognizable as odd or unique, then it could have more value than a standard serial number. The first letter of the serial number (found on newer bills) represents the bill’s series the year in which the design of the bill was approved for production. This begins with A, and moves through the alphabet each time a new series is needed (for example, each time there is a new secretary of the treasury, the bill design changes because the secretary's signature is on all currency). Serial Numbers: There is a certain subgroup of collectors who really like serial numbers. 1 Note (1963-Present) Explore security and design features of the 1 note, issued 1963-present. The series indicates the year in which the design of the bill was approved for production. These printable coloring sheets of denominations 1, 2, 5, 10, 20, and 100 are intended for children, parents, and teachers. The first letter, only found on the new-style bills, represents the series of the bill.