What is the value of a 2009 US 5 dollar bill with blue ink?

Answer 1

Please check your bill again. Blue ink would indicate that your bill is a silver certificate; the last $5 silver certificates were dated 1953. A 2009 bill should state that it's a Federal Reserve Note.

Two possibilities are:

(1) Many 2006-series and all 2009-series $5 bills have a purple background. It's not really blue but could be close enough depending on wear and color interpretation.

(2) The bill could have accidentally been left in a pants pocket and washed. Some detergents with anti-yellowing agents have been known to react with the green ink used on parts of US bills, leaving behind more of the ink's blue component.