It is on the end of my $1 bill. The serial no. is L57845205M and I would like to know what city the M represents.
The only type of U.S. currency commonly found in circulation today is the Federal Reserve Note. Up through Series 1995, all FRNs had serial numbers consisting of one letter, eight digits, and one letter, such as A12345678B; now only the $1 and $2 notes still use this form. The first letter of such a serial number identifies the Federal Reserve Bank which issued the note; since there are twelve FRBs, this letter is always between A and L. The last letter has no particular meaning; it merely advances through the alphabet as each block of notes is printed. The letter O is not used because of its similarity to the digit 0, and the letter Z is not used because it is reserved for specimen notes or test printings. On some notes, a star appears in place of the last letter. The star indicates that the note is a replacement for another note that was found to be defective or damaged during printing (see the section on star notes below). The eight digits can be anything from 00000001 to 99999999, but in recent years the highest serial numbers have been reserved for the BEP's souvenir uncut sheets of currency, and therefore not issued for circulation.
