If it's the size of a dime it's not American. Post a separate question and include the country it was made in, the denomination, and year.
In value, a penny is smaller. In size, a dime is smaller.
The value to a collector depends on the coin's condition. Show it to a coin dealer.
The dime has a greater value in trade, and greater purchasing power, but the coin is physically smaller than the penny.
If this is a penny struck on a dime planchet, it's worth about $150 If this is a dime that was restruck with penniy dies, so details of both strikes show, it's worth about $500 If this is a dime that somebody smashed a penny into, leaving an impression, it has no added value. Proper authentication is required.
dime
In value, a penny is smaller. In size, a dime is smaller.
The value to a collector depends on the coin's condition. Show it to a coin dealer.
Chances are, if it is the same size or looks like a dime, it may be counterfeit.
The dime has a greater value in trade, and greater purchasing power, but the coin is physically smaller than the penny.
a nickel is not bigger than a penny its the same size
If this is a penny struck on a dime planchet, it's worth about $150 If this is a dime that was restruck with penniy dies, so details of both strikes show, it's worth about $500 If this is a dime that somebody smashed a penny into, leaving an impression, it has no added value. Proper authentication is required.
No pH value, cf related questions on pH of dime-quarter-penny
Lincoln is on the penny, Roosevelt is on the dime. It's likely a novelty coin with no value.
In average condition, about a dime.
The dime couldn't have been printed as a penny. Different productions and not connected during the minting process. Sounds like your coin is a damaged one.
dime
the standard ipod headphones are about the size of a penny or a dime.