It would depend on the denominations of the coins. Post new question with more information.
It depends if they are copper (before 1982) or zinc (after 1982). Some 1982 coins are copper and some are zinc so you'd need to weigh them to find out if they are copper or zinc. Zinc pennies weigh 2.5 grams and Copper pennies weigh 3.11 grams.
A 20-coin roll of Franklin half dollars would have a face value of $10, would weigh 250 grams (8.0377 troy ounces, or 8.8185 oz avoirdupois), and being 90% silver, would have 7.234 troy ounces of silver, giving it a "melt value" of $102.80 (as of December 3, 2007)
With the date of 1979 the coin is a Susan B. Anthony Dollar, none contain any silver and most all are face value. The mint mark is on the obverse (front) of the coin above the left shoulder.
Actually three US coins have been struck in copper, and modern US cents are mostly zinc with a thin coating of copper. The use of copper dates back to the early days of coinage when coins had to contain their face value in metal. I.e. a dime contained 10¢ worth of silver, a half dollar had 50¢, an eagle had $10 worth of gold, and so on. Copper was the only metal that was (a) inexpensive enough and (b) soft enough to be made into low value coins. Also, at that time there were also half-cent coins so pennies weren't the only copper coin. By the 1850s inflation made the half-cent coins almost useless so the denomination was discontinued. The size of the cent was reduced to its current diameter and the composition was changed, eventually being made of bronze. A few years after that the Mint experimented with a 2 cent coin, which was the third denomination made mostly from copper. Since 1964 coins haven't been required to be worth their metal value so the composition has been changed to cheaper metals, but for a number of reasons the sizes and colors of most US coins have been kept the same as they were a century and a half ago.
It is referring to face value, or what you see and what others perceive
Face value only.
44 half dollar coins equals 22 dollars face value (value of the coins may be worth more than 50 cents each).
Aside from the one dollar coin, other coins have a face value of less than one dollar. In the past, there were larger value coins, but they haven't been used since the 1930s.
All of the business strikes of presidential dollar coins and other modern one dollar coins are worth face value only. Uncirculated ones retail for $3 to $6 depending on date.
Face value.
All Eisenhower dollar coins struck for circulation have only face value, just the proof and special collectors coins sold from the mint hold higher value.
The coin is a Eisenhower dollar and has no silver in it. Only proof and uncirculated coins from the mint have more than face value.
Sacagawea silver dollar coins were not minted in 1979. The first year of issue for Sacagawea dollar coins was 2000, and they are made of a copper-nickel clad composition, not silver.
All Eisenhower Dollar coins struck for circulation have no silver and are face value only regardless of date or mint mark. Only collectors coins issued by the mint carry retail values over face value.
Sacagawea dollar coins are common and worth face value.
No. A dollar is a dollar between banks and the Treasury.
None of the SBA Dollar coins struck for general circulation (except the 1979-P Near Date) have more than face value. Only proof and uncirculated collectors coins sold from the Mint have premiums