1902 Liberty Nickel:
- Good Condition: $20 - $30
- Fine Condition: $40 - $60
- Very Fine Condition: $70 - $100
- Extremely Fine Condition: $120 - $180
- Uncirculated Condition: $200+
1907 Liberty Nickel:
- Good Condition: $15 - $25
- Fine Condition: $30 - $45
- Very Fine Condition: $45 - $65
- Extremely Fine Condition: $75 - $110
- Uncirculated Condition: $125+
Please note that these values are approximate and can fluctuate based on market conditions and the specific characteristics of individual coins. To determine the exact value of a 1902 or 1907 Liberty nickel, it's recommended to consult with a reputable coin dealer or appraiser who can assess the coin's condition and provide an accurate valuation.