American nickels are called nickels because they're made out of nickel (and copper), not silver. Buffalo nickels were minted from 1913 to 1938 at 3 different mints, so a lot more information is needed to ID and value your coin.
Please post a new question with the coin's date and whether there is a small D or S below the words FIVE CENTS.
If you can't read the date (a common problem with older buffalo nickels) it's unfortunately classed as a "cull" and is worth at most 10 or 15 cents as a "filler" coin.
10 cents, the coin has no silver.
The US Mint did not issue a buffalo coin in 1970. Please examine your coin and submit a new question with additional information concerning it.
A 5 cent 1937 buffalo coin is exactly 12,000 dollars in the years through 2010-2025.
There's no coin called a "buffalo penny". Indian head cents were made from 1859 to 1909, and buffalo nickels were made from 1913 to 1938.
10 cents, the coin has no silver.
There is no such coin. All 1955 cents were struck in bronze. Cents have never been struck in silver. The only silver-colored cents released to circulation were the famous 1943 "war cents". You have either an altered coin that someone plated with a silver-colored metal, or a novelty item made privately using a different metal than bronze.
The U.S. has never struck cents in silver. Your coin is plated, which means it's a damaged coin worth only 1 cent.
If you're referring to a Kennedy half dollar, those minted in 1971 and after are NOT silver, and worth 50 cents.
The coin is a Indian Head nickel but is commonly called a Buffalo nickel. 1938 was the last year the coins were made and all of them were struck at the Denver Mint so there is a "D" mintmark on the reverse under FIVE CENTS. None of them were ever struck in silver, most coins have values of $3.00-$5.00
US cents were never struck in silver. All cents from the 1950s were struck in a bronze alloy. Your coin is almost certainly plated, and has no extra value.
No Buffalo nickels were ever made from silver. 1937 is one of the most common, value is 25 cents to $3.00 for circulated coins.
By 1983, Canadian coins were no longer made of silver. It's worth 50 cents.