they ll continue to circulate. reporter: the proclamation of king charles iii has presented coin makers with a fresh challenge. it is quite a moment in british history. it s a personal moment for king charles iii, and personal because we re representing his likeness. the way it s been modeled, the way it s been sculpted creates an accessibility. reporter: great pains have been taken to pay tribute to the queen s 70-year reign through a 5 pound continue available to collectors featuring a portrait of her majesty at the beginning of her reign and one portrait capturing the monarch in her later years. whereas the one to enter later circulation is the 5 pence coin. he faces in opposite direction to the queen. and that s a 300-year-old tradition. we have no idea actually why.
newly minted monarch. here in london, the coin maker is moving full steam ahead with the country s new legal tender. just one of several changes taking place following the death of queen elizabeth. although it will be a while before britaining ingons bid a good-bye to the image of the queen. we ll see coins that have her portrait on it and also the king s portrait on. currently there are about 27 billion queens that have the queen on, and they will continue to circulate. reporter: and proclamation of king charles iii have presented coin makers with a fresh challenge. it is quite a moment in british history, a personal moment for king charles iii, personal because we re representing his like ngs the way that it has been modeled, and it creates an accessibility.