A moderately circulated example of the better light green seal variety $500 from the New York district.
An underrated star note from a popular and scarce Fed district, with a four digit serial number to boot.
Neff-Simon. A fresh and lovely example of a famed $20/$10 Double Denomination which has rightfully earned the title "the King of Errors." According to Heritage Auctions, examples surfaced in Houston, TX back in 1978 and quick intervention by the Dallas Federal Reserve Bank resulted in many notes being retrieved prior to entering circulation and subsequently being destroyed.