Hello and welcome. 
First off, we should say that your "silver" almost certainly isn't actual silver. In 1994, as is still the case today, British pennies were made of steel, with a thin copper plating. So a penny that shows as "silver" is most likely a steel penny that's got something wrong with the plating, so the steel is showing through.
Whether the "thing that went wrong with the plating" happened at the mint (and would therefore be a mint error) or happened afterwards (and would therefore be a "damaged coin") is impossible to say, without seeing pictures of your actual coin.
First off, we should say that your "silver" almost certainly isn't actual silver. In 1994, as is still the case today, British pennies were made of steel, with a thin copper plating. So a penny that shows as "silver" is most likely a steel penny that's got something wrong with the plating, so the steel is showing through.
Whether the "thing that went wrong with the plating" happened at the mint (and would therefore be a mint error) or happened afterwards (and would therefore be a "damaged coin") is impossible to say, without seeing pictures of your actual coin.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis




















