To clear things up, the "lady" is Miss Liberty, and "V" is of course the Roman numeral for 5.
However, the last Liberty Head nickels were struck for circulation in 1912 so your coin can't be dated 1981. If you meant 1891, please see the question "What is the value of an 1891 US nickel?" for more details.
5 dollars
5 cents. Not an unusual coin.
No Nickels were struck in silver after 1945, the value is 5 cents.
Its face value is 5 cents, but the melt value of a 1955-1981 Canadian nickel is $0.09 so the melt value is 4 cents more than the face value of the coin5 cents. It's not rare, and many are still in circulation.
50 cents, they are made of copper nickel and found commonly in circulation. They carry no extra premium beyond face value.
Realistically, five cents. It's too common and recent a date to be worth more.
More than ONE BILLION 1981 nickels were issued for circulation. None plated with copper by the Mint. It's a novelty coin of some kind that has no numismatic collectible value. It's just a nickel.
All circulation 1971 and later halves are made of copper-nickel, not silver, so they have no added value if you found it in change. A nice uncirculated 1981-P half might bring $1 to $8 depending on quality. A 1981-D would be $1 to $12.
A coin of this nature must be seen to determine why it appears to be made of copper instead of the copper/nickel other nickels are made of. I suggest you take it to a coin shop and have it appraised.
The value of an 1861 US nickel can vary depending on its condition, rarity, and any unique characteristics it may have. In general, an 1861 US nickel in average circulated condition may be worth around $10 to $50, while a well-preserved or rare variety could fetch hundreds or even thousands of dollars at auction. It is recommended to have the coin professionally graded and authenticated to determine its exact value.
10 cents
Five cents. Common coin.