2p coins are currently made of plated steel; it could simply be a normal 2p coin that has lost its plating, showing the raw steel underneath. However, the steel would not really look "silvery", more a dull grey probably with rust spots.
It could be a post-mint "plate job" - somebody using an electroplating bath to coat the coin in silver, chromium, nickel or something else silvery-looking. THis might have been done for "Art", it might have been done as a chemistry demonstration, it might have been done with criminal intent to try to fool people into thinking it's a 10p coin instead - though it seems an awful lot of trouble to go through for a mere 8p profit.
Finally, and the least likely of the three options, it could be a mint error, a "wrong planchet" of some kind. A wrong planchet would probably weigh significantly more (or significantly less) than a normal 2p coin.
It could be a post-mint "plate job" - somebody using an electroplating bath to coat the coin in silver, chromium, nickel or something else silvery-looking. THis might have been done for "Art", it might have been done as a chemistry demonstration, it might have been done with criminal intent to try to fool people into thinking it's a 10p coin instead - though it seems an awful lot of trouble to go through for a mere 8p profit.
Finally, and the least likely of the three options, it could be a mint error, a "wrong planchet" of some kind. A wrong planchet would probably weigh significantly more (or significantly less) than a normal 2p 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



















