Star notes, birthday notes and other U.S. currency serial number rarities can be fun to collect and maybe even worth the collector's time.

That same story notes that a recent $2 bill, printed in 2003, sold for $2,400 through Heritage Auctions. ... The other is that it was a star note.

Star notes are replacement bills and are always of interest to collectors, with the 1995 series being relatively scarce. Though most will be worth just $2, the USCA lists a value of $500 on ...

1935 and 1957 $1 Silver Certificates with Star Notes. Not all valuable $1 bills are over a century old. Some 1935 and 1957 $1 Silver Certificates, still fairly common, become extremely collectible ...

A star note means that the bill is a replacement for another bill with the same serial number. Stars are really rare, especially in older bills. A 1923 $10 star note in beautiful condition sold ...

For example, you can review all of the star note printing runs for the $1 bill and see that there are several with 500,000 printed bills (or less) for a specific Federal Reserve Bank.

Star notes are replacement bills and are always of interest to collectors, with the 1995 series being relatively scarce. Though most will be worth just $2, the USCA lists a value of $500 on ...

For currency collectors, any star note that has a print run of less than 640,000 is considered somewhat rare. In addition, ...

Star notes are replacement bills and are always of interest to collectors, with the 1995 series being relatively scarce. Though most will be worth just $2, the USCA lists a value of $500 on ...