1. Series and District: The series and district of the bill can impact its value. For example, notes from rarer series or districts may command higher prices.
2. Condition: The overall condition of the bill is critical in determining its value. Bills in pristine condition, referred to as "uncirculated," are more valuable than those that show signs of wear and tear.
3. Rarity: Certain serial numbers or combinations of numbers can increase the rarity and value of a bill. Notes with sequential serial numbers or low serial numbers may be more sought-after.
4. Errors: Any printing or production errors on a bill can make it more valuable. Mismatched serial numbers, off-center printing, or other noticeable errors can increase a note's rarity.
5. Signature Combinations: The signatures of various treasury officials on a bill can also influence its value. Some signature combinations are rarer than others and may be more desirable to collectors.
Considering all these factors, the 1919 $5 bill could have a value anywhere between $80 for a well-worn note and $1,500+ for a note in exceptional condition with desirable features. It is always recommended to consult with a professional numismatist or refer to reputable price guides to determine the exact value of a specific 1919 $5 bill.