The 1920 Standing Liberty Quarter can vary in value depending on its condition and mint location (Philadelphia or San Francisco). Here's a breakdown:

Mintmark:

• There are two mintmarks to look for:
  • No mintmark: This indicates the coin was minted in Philadelphia, which is the more common variety.
  • "S" mintmark: This signifies coinage at the San Francisco mint. The 1920-S Standing Liberty Quarter is scarcer than the Philadelphia mint version and can be significantly more valuable.

Condition:

• The condition of your coin is a major factor influencing its value. Professional grading services like PCGS or NGC assign a grade (typically on a 70-point scale) reflecting the coin's condition. Here's a general range:

  • Circulated (AG-VG):
    • Philadelphia (No mintmark): $11 - $165
    • San Francisco (S mintmark): $15 - $300 (due to its relative scarcity)
  • Extremely Fine (XF): Both mintmarks can see a jump in value, potentially reaching several hundred dollars.
  • Uncirculated (MS): Prices can go much higher for uncirculated specimens, especially for the San Francisco mintmark, potentially reaching thousands of dollars depending on the specific MS grade.

Additional Factors:

• Luster: Mint shine remaining on the surface can enhance value, especially for higher grades.
• Toning: Natural toning can add aesthetic appeal and value, but excessively dark or unattractive toning can detract.

Recommendations:

• To determine the exact value of your 1920 Standing Liberty Quarter, consider getting it professionally graded by a service like PCGS or NGC. This will identify the mintmark and assign an accurate grade, allowing for a more precise value assessment.
• Research online auction results and dealer listings of graded 1920 Standing Liberty Quarters with similar characteristics (mintmark and condition) to understand current market prices.