What is the value of an 1928 US quarter?

The value of a 1928 US quarter can vary significantly based on its condition and mint mark. Generally, a 1928 quarter in good condition may be worth around $6 to $20, while uncirculated specimens or those with a "D" mint mark from Denver can fetch higher prices, potentially exceeding $100. It's best to consult a coin dealer or numismatic expert for an accurate appraisal.