Please don't assume that because a coin is old it has to be made out of silver. These coins are called "nickels" because ... they're made from nickel (and copper).
There's more information at the Related Question.
1927 is not a rare date. This coin is commonly called either a buffalo nickel or an Indian head nickel. Please see the question "What is the value of a 1927 US nickel?" for more information.
90 cents
This coin is commonly called either a buffalo nickel or an Indian head nickel but not a "buffalo head nickel" - after all, it shows the whole buffalo! Please see the question "What is the value of a 1927 US nickel?" for more information.
The only years silver was used in US nickels was 1942-1945, the coin is face value.
This coin is commonly called either a buffalo nickel or an Indian head nickel (*). Please see the question "What is the value of a 1927 US nickel?" for more information. (*) But not a "buffalo head nickel" - after all, it shows the whole buffalo! Assuming the coin is circulated and has no mintmark, the 1927 Buffalo nickel is very common, average coins are $1.00-$5.00
This coin is commonly called either a buffalo nickel or an Indian head nickel (*). Please see the question "What is the value of a 1927 US nickel?" for more information. (*) But not a "buffalo head nickel" - after all, it shows the whole buffalo! Assuming the coin is circulated and has no mintmark, the 1927 Buffalo nickel is very common, average coins are $1.00-$5.00
This coin is commonly called either a buffalo nickel or an Indian head nickel (*). Please see the question "What is the value of a 1927 US nickel?" for more information. (*) But not a "buffalo head nickel" - after all, it shows the whole buffalo! Assuming the coin is circulated and has no mintmark, the 1927 Buffalo nickel is very common, average coins are $1.00-$5.00
Your nickel contains no silver. Only nickels made from 1942-1945 contain silver. See the related question below.
If you found it in change your nickel is only worth face value. US nickels made from 1866 to mid-1942 and from 1946 to the present are made of a copper-nickel alloy, not silver. In fact, no circulating US coins have contained any silver since 1969.
That's a silver war nickel, containing 35% silver, and it's worth at least $2.
Copper-nickel, not silver. The only nickels that ever contained any silver were the famous "war nickels" made from 1942 to 1945, when silver replaced nickel metal because nickel was needed for the war effort.
The 1949 Jefferson nickel is still found in circulation, contains no silver and likely only face value.