How much is a 1971 silver dollar worth in weight and in mint condition? 

This coin, regardless of condition, is worth at least its weight in silver. The silver melt value for this coin is $7.90 as of April 10, 2023. This melt value is calculated from the current silver spot price of $24.98 per ounce. The standard 1971 silver dollar is worth around $15 in MS 63 choice uncirculated condition.
Here are the key details about the value of a 1971 silver dollar:

Weight Value:
- The 1971 Eisenhower dollar contains 0.3161 troy ounces of silver
- At the current silver spot price of $24.98 per ounce (as of April 10, 2023), the melt/silver weight value is:
0.3161 oz x $24.98 = $7.90

Mint Condition Value:
- In uncirculated mint condition (MS 63 grade), a 1971 silver Eisenhower dollar is worth around $15
- This $15 value represents the numismatic or collector value for an uncirculated example, which is higher than just the melt/weight value of the silver content

So in summary:
- The baseline melt/weight value is $7.90 for the silver content
- But if the 1971 dollar is truly in gem mint uncirculated MS 63 condition, it would be worth around $15 to collectors

The value can go up further for higher grades like MS 65 or better. But at minimum, even a circulated 1971 silver dollar is worth its $7.90 melt value for the silver.