These are ordinary circulation coins with no added value unless you have one in uncirculated or proof condition.
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?"
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.
An alloy of 25% nickel and 75% copper. That's the same metal as all other dates for nickels except the famous "war nickels" from 1942-45.
Check that coin again. The first U.S. nickel was issued in 1866.
Average current retail value is $5.00
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.
Liberty nickels were made from 1883 to 1912. Your coin is a familiar Jefferson nickel. Please see the question "What is the value of a 1939 US nickel?" for values.
It's not possible to give an answer without a date. Look for questions in the form "What is the value of a US nickel?" for specific information.