Brits have been urged to rummage through any old coins they have lying around at home, as some could be worth a "small fortune". According to one expert, certain coins predating a specific year can be particularly valuable. In a clip posted to TikTok, an expert known as the Coin Collecting Wizard revealed that some old shillings were made with genuine silver. This applies to any shillings minted before 1946 . A shilling is a historic British coin and unit of currency that was worth 12 old pence