It depends on a lot of factors. Modern cents are only worth face value, and even wheat cents from the 1940s and 1950s tend to be worth a nickel or so, simply because so many were made.
But if you go back earlier than that, some US cents can be moderately to extremely valuable - for example, a 1914-D cent can be worth hundreds of dollars, and some very old Large Cents can be worth many thousands.
But the bottom line is that unless you know a coin's date, mint mark, and condition it's almost impossible to assign a value sight-unseen.
Two pennIes
They're not.
The copper in a US cent made before 1982 is worth almost 2 cents. Those made after 1982 are worth much less than 1 cent (but the cost of producing them is about 1.5 cents). Both types were made in 1982. But before you start sorting your pre- and post 1982 pennies, you should know that there is an administrative order prohibiting the "melting or exporting of large numbers of one and 5 cent coins" which could result in a fairly large fine.
In most years the San Francisco Mint turned out fewer cents than Denver or Philadelphia, so many are more expensive than the others from the same date, but not all are. You certainly cannot say that any S-mint cent is worth more than any D-mint.
Those minted before 1982 contain 95% copper and are worth over 2 cents each with current copper prices. Then others are valuable because of their age or scarcity.
Because there are no 1967 pennies. Decimal currency started in 1966.Actually, 1966 pennies should be worth more than 1967 pennies as a 1967 penny would be a fake.CorrectionThis question was posted in US Coins so it refers to US 1-cent pieces by their slang name. It's actually a rather lame joke. The answer is (ba DING!) "1,967 pennies are worth $19.67 which is one cent more than $19.66"
One roll of pennies has a face value of a 50 cents. However, if there is a penny in the roll that is worth more than 1 cent the roll will be worth more.
Because the rise in value of copper made pennies worth more than one cent.
They are worth more because less were minted.
Lincoln is pictured on usually pictured on the front of the penny. 2009 is the only date that he was on the back. These pennies are very common and worth only 1 cent.
Two pennIes
They're not.
One cent - it's plated, not real silver. The U.S. never minted silver pennies. They would have been worth more than dimes!
The 1943 steel Lincoln cent is more common than most people realize. On average, one is worth 10 cents.
A solid copper penny is worth more than one cent. This has been true for a long time, and is why modern pennies are made primarily of zinc, and only plated with copper. In currency they are about up to par, but in scrap metal, who knows, you may be able to get more bang for your buck.
A 1999 Denver Mint penny is not worth appreciably more than other pennies. In most collections, this penny would only be worth one cent.
...1 cent. Pennies made after 1982 no longer have much copper in them and the actual bullion value of them is less than one cent. There are no rare Lincoln memorial pennies except for errors.