No. Trial coins were struck in 1974 and shown as samples. Supposedly all were melted but rumors persist that a few of the coins were hidden away.
In 2011, the U.S. Mint produced 4,938,540,000 pennies.
See the related links section for a virtual tour of coin production by The United States Mint.
According to the US mint, 6015.2 million pennies were made in 2012.
From the US Mint, a penny has a mass of 2.500 grams. There are 28.35 grams in an ounce, so (28.35)/(2.500) = 11.34, so 11 pennies is almost an ounce.
There has never been an aluminum dime created by the US mint
In 2011, the U.S. Mint produced 4,938,540,000 pennies.
Pennies are minted at three locations in the US; The San Francisco Mint, The Denver Mint and the Philadelphia Mint. Pennies from San Francisco have an "S" on them. Pennies from Denver have a "D" on them and pennies from Philadelphia have no letter.
Total 8.9 BILLION (Excluding "Proof" coins) 4.7 BILLION are from the Philadelphia Mint. 4.2 BILLION are from the Denver Mint.
In general, "S" mint marks from the San Fransisco mint are more scarce than other mint marks when it comes to pennies. But just because it has an "S" on it doesn't make it a rare, or even scarce coin.
Your coin is only plated silver. The US mint has never made silver pennies. Plating adds no extra value.
No, though the mint did experiment with aluminum pennies in 1974, though all were either destroyed, donated to the Smithsonian, or stolen.
Company that makes pennies
Australian Pennies from 1955 to 1964 inclusive were minted at either or both of the Melbourne Mint and the Perth Mint. Pennies minted at the Melbourne Mint have no mintmark. 1956 Pennies minted at the Perth Mint can be identified by a dot "." after the "Y" in PENNY, eg. "PENNY.".
Company that makes pennies
1938 IN a MINT
At the Philadelphia Mint.
Australian Pennies from 1955 to 1964 inclusive were minted at either or both of the Melbourne Mint and the Perth Mint. Pennies minted at the Melbourne Mint have no mintmark. Pennies minted at the Perth Mint can be identified by a dot "." after the "Y" in PENNY, eg. "PENNY.". In other years, Perth Mint Pennies can also be identified by a dot after the "A" in AUSTRALIA, eg. "AUSTRALIA." or, a dot between the designers initials "K.G".