5 cents. Circulation nickels from the early 1950s to today are only worth face value.
If it is a Mint error it may be worth a few dollars, take it to a coin dealer to see if it has any value.MoreIt's called a Jefferson nickel rather than a Monticello nickel. If by "double struck" you mean that Monticello is on both sides (which would account for the lack of a date) what you have is a novelty item called a magician's coin. There's more information at the question "What is a double headed nickel worth?"
That depends on which version you have. If there is no mintmark, then it's made of copper and nickel, worth maybe 50 cents in decent condition. If there is a large letter P on the back (above Monticello), then it's a silver war nickel, worth a dollar or two.
It's a Jefferson Nickel not a Monticello Nickel an most are just 5 cents unless it in the grade of FV-20 or better and has a D or S mint mark then value goes up. But without that information an accurate assessment is not possible.
That's just a regular 2006 nickel. That face is President Jefferson. The coin contains absolutely no silver, and is worth exactly 5 cents.
If there is no letter to the right of the image of Monticello on the coin's back, your nickel is worth about 15¢ If there is a small "D", it's worth $5 to $10 depending on condition. However there are counterfeits of the 1950-D coin so you should have it examined by a dealer or appraiser.
A Buffalo Nickel stamped on a penny is worth $800.00. A Jefferson Nickel stamped on a ZN penny is worth $70.00. A Jefferson Nickel stamped on a CU penny is worth $60.00.
The man is still Thomas Jefferson, this design is on all nickels from 2006 to date. It's only a nickel spend it.
Millions are in circulation, just spend it.
It depends on its year, its condition, and if there's anything unusual about it.
It's just a nickel, spend it.
There are two different Jefferson nickels dated 1942. One is made from 35% silver with a large "P" or "S" mintmark on the reverse over Monticello. This is a War Nickel that's worth about $1.00 in circulated condition. The other is a common copper-nickel coin that in circulated condition is really only worth face value.