Here are some general values for John Adams one dollar coins:
1979 P (Philadelphia): $1.50 - $2.00
1979 D (Denver): $1.50 - $2.00
1980 P (Philadelphia): $1.50 - $2.00
1980 D (Denver): $1.50 - $2.00
1981 P (Philadelphia): $1.50 - $2.00
1981 D (Denver): $1.50 - $2.00
These values are approximate and may vary depending on the actual condition and market demand for the coins.
It's important to note that some John Adams one dollar coins may have special features or errors that make them more valuable. For example, some coins may have double die errors or other mint errors that make them more desirable to collectors.
If you have any John Adams one dollar coins, it might be worth taking them to a coin dealer or appraiser to get a more accurate estimate of their value.