It depends. First off what are you buying the coins for? If you are buying coins for junk silver, or coins simply for the silver value without regard for the condition or dates, almost anyplace local is a decent bet. Few people will counterfeit things like 1962 Quarters or old, worn, 1964 Roosevelt dimes. Buying via online retailers like E-bay is also possible, but the main issue is getting things shipped which, while pretty safe, is always a small risk factor. Shipping also adds more costs. However, if you are looking at buying high-grade, key-dates for your collection I wouldn't buy from Ebay (or local dealers you don't trust) unless they are certified by a reputable company like PGS or NGC. Because misrepresentation is incredibly common when it comes to coins. There is a big difference between, say, a MS-63 and an MS-64 or 65 certified silver dollar. Similarly, a 1916 Mercury Dime is rather common, but an addition of a "D" mintmark by an unscrupulous person can be worth several hundred dollars even in lower grades, and because of this, fake mintmarks abound. Your best bet for low prices and best service is a local coin or jewelry shop which you trust. The internet is a good option, especially Craigslist and eBay for "junk" currency. But if you are looking at collector value, either avoid the craigslist and eBay and only buy from dealer's sites or large, well-known sites such as AMEX.
Tucson AZ buy silver coins in 6470 North Oracle Road.
Yes, you can buy current silver proof sets & bullion coins from the U.S. Mint.
If you are talking about a US coin, you have to go to the US mint website to buy silver coins. Banks don't sell silver coins. They don't distribute them either.
you go to the store!
Many coin dealers and jewelers buy gold & silver.
Jewelers and coin dealers buy gold and silver.
Coin dealers, jewelers, collectors are known to buy silver coins.
Many coin dealers and jewelers buy gold & silver.
Coin dealers and jewelers do buy gold & silver coins.
No, banks do not usually buy silver coins. However, you can always go to a silver and gold dealer and exchange your precious metals for hard cash there.
Silver coins can be purchased from a number of places in the US. You can purchase silver coins directly from the United States Mint, and most cities contain many stores for buying and selling silver and gold coins.
Always buy coins, well known and collected coins such as the American Silver Eagle or the Canadian Maple leaf. They sell for a small premium above spot silver price, but are much easier to liquidate because their silver content is known. The Silver Eagle has numismatic value too, some coins that were sold as bullion are now worth thousands.