They're relatively rare to find in circulation being that they're over 70 years old, but they're not so rare that they're extremely valuable.
NICKELS dated 1940 & 1941 arre made from .750 copper and .250 nickel.
Please don't assume that because a coin is old it has to be made of silver. It's made of copper-nickel like all other nickels except the WWII ones with a large mint mark above the dome of Monticello. 1941 is not a rare date for Jefferson nickels. There's more information at the question "What is the value of a 1941 US nickel?".
Jefferson not Lincoln, and none are considered rare.
Buffalo nickels were minted from 1913 to 1938
Please see the Related Questions for specific details.
NICKELS dated 1940 & 1941 arre made from .750 copper and .250 nickel.
Please don't assume that because a coin is old it has to be made of silver. It's made of copper-nickel like all other nickels except the WWII ones with a large mint mark above the dome of Monticello. 1941 is not a rare date for Jefferson nickels. There's more information at the question "What is the value of a 1941 US nickel?".
Jefferson not Lincoln, and none are considered rare.
Because so many were made that they can still be found today. In about 30-40 years they will be worth more because they will be harder to find.
War Nickel, or silver nickels started in 1942 through 1945. 1942 produced both nickels out of nickel and nickels from silver. The non silver ones do not have the large mint mark while the silver ones have the large mint mark.
All U.S. nickels from 1866 to 1941 are made from 75% copper & 25% nickel. From Oct 1942 through 1945 the nickel in the coin was replaced with silver. In the 1946 the composition went back to copper-nickel.
Buffalo nickels were minted from 1913 to 1938
The coin has likely been cleaned.
Please see the Related Questions for specific details.
To clear things up, 1941 nickels aren't war nickels. The US didn't enter WWII until December of that year, and war nickel production didn't start until 10 months later. All 1941 nickels were struck in the standard alloy of 75% copper and 25% nickel, so a copper-colored coin could result from exposure to heat or chemicals. In particular, nickels are often copper-plated in high-school chemistry experiments.
No. But the ones where the buffalo have three legs are.
No rare 1941-S dimes. The 1941-S Mercury dime does have large and small mintmark varieties as do all coins (except the half dollar) that were struck in San Francisco in 1941, they have no added value.