Look for the "S" mint mark indicating a rare silver-clad version.
Check for high-grade, uncirculated quarters with no wear.
Inspect for minting errors like double-dies or off-center strikes.
Identify rare proof versions with sharper details and finishes.
Verify whether the reverse design is Type I or Type II.
Examine the coin's edge for a solid silver band, not copper.
Use a magnifying glass to spot subtle design variations.
Get professional grading for an accurate assessment of value.
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