What is the value of a 1928 US 20 dollar Federal Reserve note?

In circulated condition, $21-$25 A nice crisp uncirculated one, about $50

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Values can differ based on what letter if any is next to the date and which Federal Reserve Bank distributed the bills. Some auction prices for bills that are worth more than the general price above:

• No letter, Richmond District: $45-$60 circulated, $100 uncirculated
• "A", Kansas City District: $45-$95; $275
• "B", Atlanta District: $45-$65; $175
• "C", Chicago District: $175-$500; $1800
• "C", San Francisco District: $350-$1000; $3500