What does it mean to have a 5 point star in front of a serial number of a silver certificate dollar?

A 5-point star in front of a serial number on a silver certificate dollar indicates that the note is a replacement for a misprinted or damaged bill. These star notes are produced in limited quantities and are often considered more valuable to collectors due to their rarity. The star replaces the last digit of the serial number and signifies that the note is part of a special series. Collectors often seek these notes, making them more desirable in the market.