Liberty Walking Half 1892-P (Philadelphia Mint) with no mintmark:
- Good condition: $100 - $200
- Fine condition: $250 - $400
- Very fine condition: $450 - $600
- Extremely fine condition: $700 - $1000
- Uncirculated condition: $1200 - $2500
However, certain rare dates and mint marks can significantly increase the value. For example, the 1916-D (Denver Mint) Liberty Walking Half in uncirculated condition can be worth several thousand dollars.
It is recommended to consult a professional coin dealer or use reputable coin price guides to obtain an accurate valuation based on the specific characteristics of the Liberty Walking Half you possess.