You don't "trade" them for cash. If you take them to a bank they're only obligated to give you $1 each, and those "We buy gold and silver" places often only pay scrap value for the coins' silver metal content or low-ball their collector values.
You'll need to get an idea of the coins' retail values to a collector, which means determining their dates, mint marks, and conditions. You can post on eBay and get a bit more for them, but a dealer may be willing to take a bunch of them all at once. However a dealer will pay wholesale, about 2/3 of the coins' retail prices, so you'll have to decide for yourself whether it's worth the effort to sell them individually to a collector vs. a single transaction.
go to a bank ask ask for whatever change you want.
More Information:Important:It is a good idea to have someone with coin collecting experience to look at your coins before you take them to the bank, especially half dollars. If any of your half dollars are dated between 1965 through 1970, they contain silver and will be worth $2.15 each just in silver value. If any are dated 1964 or before, they will be worth $5.26 each just in silver value and perhaps more in numismatic value [[numismatic is a fancy word for coin collecting]].The bank is a good option only if all of your half dollars are circulated and dated 1971 and newer, although the 1987 half dollar could be worth more than 50 cents as well. Uncirculated coins could also have a greater than face value too.
Another possibility is to just spend any that are dated 1971 or later. They're still legal tender and have never been withdrawn.
You can sell it at your local coin dealer or you can put it in an auction.
i have a 1891 silver dollar coin in good cndition with an s at the back do you know its value
These aren't rare so taking them to your local coin shop would be a good place to start. You can also put them on an online auction site such as eBay.
Assuming it is in circulated condition, it is worth around $22.50 in silver content.
$13 or more depending on the condition of the coin.
Assuming the coin is circulated and has no "S" mintmark, the 1925 Peace dollar is common. The retail values are $30.00-$36.00 depending on condition.
The 1925 silver dollar from Philadelphia is a common date, worth only a little more than its silver value (0.7734 troy ounces - about $13.75 at current silver prices as of mid-October 2009) in circulated condition, and perhaps $20 to $50 in Uncirculated condition.
The amount of pure silver in the 1925 Peace dollar is .77344oz, all US silver one dollar coins from 1840 to 1935 have this much silver in them
4-21-11>> Assuming the coin is circulated and has no "S" mintmark, the 1925 Peace dollar is common. The retail values are $37.00-$40.00 depending on condition.
in good condition, 3-5$
The coin has .77344oz of pure silver.
Depending on the mintmark and physical condition of the coin, it could range from about $15 up to $100 if circulated.
The word trust is not misspelled. The Peace dollar and the standing liberty quarter both use the Latin spelling of trust as TRVST. 1925 is a common date for the peace dollar, and unless in uncirculated condition, it is worth anywhere from $25-35.
Retail values for this coin in circulated condition are $16.00-$56.00 Mint state coins start at $74.00
The value of a 1925 US silver dollar can vary depending on its condition and rarity. As of the current market, a 1925 Peace silver dollar in circulated condition is worth around $20-$30, while a coin in uncirculated condition can be valued at $50 or more. It is always recommended to consult with a professional coin dealer to get an accurate appraisal of its worth.