1926 is a relatively common date for Buffalo nickels in average condition. Look on the back to see if there is a small letter D or S underneath the words FIVE CENTS. Numismedia lists the following retail values as of 04/2009:
No letter
Very worn condition - $1
Moderately worn - $4
Slightly worn - $6
Almost no wear - $10
Uncirculated - $35+ "D"
Very worn condition - $8
Moderately worn - $25
Slightly worn - $90
Almost no wear - $250
Uncirculated - $330+ "S"
Very worn condition - $17
Moderately worn - $92
Slightly worn - $315
Almost no wear - $1000
Uncirculated - $4300+
It's either "Indian head" or "buffalo", but not "buffalo head". Buffalo nickels show the whole animal! Please see the question "What is the value of a 1926 US nickel?" for more information.
There's no coin called a "buffalo head" nickel - it shows the entire animal! Assuming the coins are circulated and have no mint marks, the 1936 Indian Head nickel (note spelling) is the highest mintage of the series, most only have values of $1.00-$3.00. The 1926 is a little better at $1.00-$5.00. There's more-detailed information at the questions "What is the value of a 1926 US nickel?" and "... 1936 US nickel".
It's the usual practice of this site to answer a single question at a time. Please see:"What is the value of a 1940 US nickel?""What is the value of a 1942 US nickel?""What is the value of a 1944 US nickel?"
If you mean a 1926 Indian Head nickel it's not silver it's a copper/nickel coin. No Indian Head nickel was ever struck in silver. Most coins show heavy wear and are valued at $1.00-$3.00.
This design is called either a buffalo nickel or an Indian head nickel; both names are about equally common. Please see the question "What is the value of a 1919 US nickel?" for more information.
The US nickel was first issued in 1866. Please double-check your coin.
5 cents.
A 1957 nickel is worth face value only, unless it's uncirculated or a proof coin.
In average condition, both coins are only worth their face value.
Average current retail value is $5.00
Check that coin again. The first U.S. nickel was issued in 1866.
This famous design is also frequently called an Indian head nickel. Please see the question "What is the value of a 1920 US nickel?" for more information.