Royal Mint plant for striking. This first phase of the mint was officially opened on 17 December 1968 by the royal attendance of Queen Elizabeth II, Prince Philip and their son Prince Charles. Originally there were fears that the Royal family would face protests because of the Investiture of Prince Charles as the Prince of Wales; however, such protests failed to materialise. The second phase of construction began in 1973 and included the addition of a means to mint coins from virgin metals completing the full minting process. Upon completion the final cost for the land, buildings and plant came to £8
Royal Mint was worth just 13.5d compared to an English mark which was worth 6s 8d. To bridge the difference between the values, unofficial supplementary token coins, often made from lead were made by unauthorised minters across the country. By 1612 there were 3,000 such unlicensed mints producing these tokens, none of whom paying anything towards the crown. "The Royal Mint", not wanting to divert manpower away from minting more profitable gold and silver, hired outside agent Lord Harington who under licence started issuing copper farthings in 1613. Private licenses to mint these coins were revoked in 1644 which led traders to