None. The only US nickels that ever contained silver were made during WWII, and no circulating US coin has contained silver since the 1960s.
A 2005 Lewis and Clark nickel is not rare at all. Hundreds of millions were minted. The only reason you don't find many in change is that people saved them almost as soon as they were put into circulation.
Unless it's proof or uncirculated, 5 cents.
The 2005 nickel is different because it features a new design on the reverse side. This design, known as the "Ocean in View" nickel, showcases a scene from the Lewis and Clark expedition. The change was made to commemorate the bicentennial of the expedition and add variety to the nickel series.
The coin is still found in circulation and is face value
Five Cents, If you hurry. --------------------------- If you really have a 2004 Lewis and Clark nickel it could be worth a lot of money. The coin was not issued until 2005. See http://www.usmint.gov/mint_programs/index.cfm?action=nickel_series
These coins are not rare and are easily found in circulation. They are worth 5 cents unless the have the mintmark "S".
It's not gold, but gold plated. It's a novelty coin that has no collectible value.
The US minted four different nickels to honor the Lewis and Clark expedition's bicentennial during 2004-2005. In circulated condition, none are worth more than face value.
The nickel wasn't first minted until 1866. If the date 1805 is right after the names Lewis & Clark, and the other side shows President Jefferson, then it's a 2005 Westward Journey nickel, worth 5 cents.
Unless there's something to make it different from the other 936,000,000 or so that were struck to commemorate the Lewis and Clark expedition, five cents.
No 2005 Bison Reverse nickels were struck in silver.
Uh, please give the coin another look. All 1985 nickels carry the familiar Jefferson portrait used until 2004. Lewis and Clark Bicentennial nickels were minted in 2004 and 2005. In any case, none of those 3 dates is rare.