40,000,000 Five Centavo coins were produced for Ecuador in 1946, so it isn't a particularly valuable coin. Perhaps US$1.00 in Uncirculated condition, maybe half that in very nice circulated condition, and very little in worse shap than that.
about a dollar
The reason they're called Jefferson nickels and Washington quarters is that Jefferson is on the nickel and Washington is on the quarter. In any case 1946 is not a rare year for nickels, see the Related Question.
The last Indian Head nickel was struck in 1938, look at the coin again and post new question.
No such U.S. coin. No square nickels or any other denomination have been made.
If you found it in change your nickel is only worth face value. US nickels made from 1866 to mid-1942 and from 1946 to the present are made of a copper-nickel alloy, not silver. In fact, no circulating US coins have contained any silver since 1969.
In 1946 the US Jefferson Nickel contained 75% copper and 25% mickel.
Buffalo nickels were made from 1913 to 1938. Please check your coin again and post a new question.
The last Liberty nickels were struck for circulation in 1912, so you must have a Jefferson nickel with that date, or a Liberty nickel with a different date. Could you please check the coin again, determine what you have, and post a new question?
Back in 1903, the nickel was called, the "Liberty" nickel. The name "Mercury" only refers to the dime and came into circulation in 1916. The "Mercury" dime was produced until 1945. In 1946 to present, it is called the "Roosevelt" dime.
From 1946 to date the coins are 75% copper & 25% nickel.
From 1946 to date the coins are 75% copper & 25% nickel.
None have any silver value. US nickels made from 1866 to mid-1942 and from 1946 to the present are made of a copper-nickel alloy, not silver.
A 1902 Liberty Head nickel is common, in average condition value is a dollar or two for most coins. No US nickel was made of silver until late 1942 through 1945 these are the "War Nickels" and had 35% silver in them. From 1946 to date they are copper- nickel.