1977 $20 Federal Reserve Note, from the Dallas district, with green seal and serial numbers.  

PCGS Currency has graded this note VF 25.

Friedberg # is 2072-K; serial # is K82267438A.  Signatures are Morton and Blumenthal.

DBR Currency - Online paper money at its finest

Note:  eBay may collect sales tax on your order, the amount of which depends on your locale of residence.