Check for a 'D' or 'S' mintmark below the date on the quarter. Quarters minted in Denver have a 'D' mark, while those from San Francisco have an 'S' mark.
Look for quarters with a full 'B' on the drum of the drum set on the reverse side. Quarters with a complete 'B' are rarer and more valuable.
Examine the quarter's condition. Quarters in mint condition with minimal wear and no scratches or damage are more valuable to collectors.
Consider getting your quarter graded by a professional grading service. Graded quarters can fetch higher prices in the collector's market.
Join online forums or communities dedicated to coin collecting to learn more about identifying valuable 1976 Bicentennial Quarters.
Visit coin shows or auctions to see firsthand how collectors evaluate and determine the value of 1976 Bicentennial Quarters.