One of the rarest Lincoln coins is a penny. 1909S VDB. S designates that the coin was minted in San Francisco, CA and VDB are the initials of the designer of the coin.
No, this is not a rare date for Lincoln cents. These coins can easily be found in circulation.
We cannot see you rare coins. Since we cannot even see your rare coins, we do not even know if your coins are indeed 'rare', what they are, their condition, when they were made - we do not know anything. Please specify in a different question what your coin is, the date it was made, and the condition it is in.
If you refer to British general circulation Threepences, there are no rare coins.
1934 is not a rare date for Lincoln Cents.
A 1919 Lincoln cent is not rare or even scarce. Average circulated coins are worth about 10 cents.
2011 Lincoln cents are not rare. It just takes some time for "current year issue" coins to make their way into circulation.
With a mintage of 72,702,618 the 1909 Philadelphia issue Lincoln cent is not rare or scarce. Average circulated coins have retail prices of $2.00-$5.00 depending on grade.
No simple answer, for Lincoln cents most coins dated before 1940 do have some extra value but it depends on the date, mintmark, and grade of the coins.
Regardless of date or mintmark it is not rare, but it could be worth a little more depending on what caused the dot? Take it to a dealer for an assessment.
Jefferson not Lincoln, and none are considered rare.
That depends on which rare coin you have. Some rare coins are worth only 150 dollars in average circulated condition while others are worth thousands of dollars. To get a more specific answer include the date and denomination of your coin.
I bought most of my rare coins at auctions.