There is no such thing as a silver 1990 penny, as U.S. pennies were made of 95% copper and 5% zinc from 1982 until the present, and prior to that, they were made of 95% copper and 5% tin and zinc. The last year U.S. pennies were made of silver was 1981, and those were only produced in very limited quantities for collectors. Therefore, a 1990 penny is not considered rare, nor is it made of silver.
The U.S. has never made one cent (penny's) coins from silver. The coin has likely been silver plated. It is not rare or special, it's just a penny.
It would depend on the coin! They made many silver George V coins in 1929. It could be anywhere from a silver crown to a small penny.
1900 morgan silver 1886 indian head penny
If it is a proof then it will have the mintmark "S". If your coin doesn't have the mintmark "S" then it is just a normal coin.
If this coin is indeed half struck on both sides, it could be worth a lot of money. Advise you take the coin to a coin dealer to have it appraised.
Rare Coin Wholesalers was created in 1990.
Just the year does not make a coin rare.
A silver penny from 1943 that sticks to a magnet is likely rare and could be a potential error coin. During this time, U.S. pennies were typically made of zinc-coated steel due to the priority of copper for the war effort. If your coin is indeed made of silver and sticks to a magnet, it may have been altered or could be a counterfeit. We recommend consulting with a coin expert or a professional to assess its authenticity and value.
A 1970 penny that is silver in color may be a misidentified coin, as U.S. pennies struck from 1959 to 1982 are made primarily of copper, while those minted after 1982 are primarily zinc with a copper plating. If the penny appears silver, it might be due to wear, environmental factors, or a possible coating. The value of a standard 1970 penny is typically just one cent unless it is in uncirculated condition or part of a rare variety. Always consult a coin expert or appraiser for accurate valuation.
A Coin?
If this question is about the coin's value, they're worth about 10 cents. It's not a rare coin.
It would be beyond rare because there are no real silver cents. You almost certainly have a plated coin that's worth only a penny. There's a faint possibility that it's a genuine cent that never had its copper coating applied at the mint. That's actually an error coin and can be worth $50-$100. The only way to tell would be to have it examined in person by a knowledgeable dealer or appraiser. But that was to get your hopes up, it's worthless, give it to me.