What is the value of a 1928 c 5.00 note with a red seal?

The value of a 1928 $5.00 note with a red seal, known as a United States Note, can vary significantly based on its condition and rarity. In general, these notes can range from around $10 to several hundred dollars, with well-preserved examples or those with unique serial numbers fetching higher prices. For an accurate appraisal, it's best to consult a currency expert or a numismatic dealer.