The reign of Henry VII saw the introduction of two important coins: the shilling (abbr.: "s"; known as the "testoon", equivalent to twelve pence) in 1487 and the pound (known as the "sovereign", abbr.: "£" or "L", equivalent to twenty shillings) in 1489. In 1526, several new denominations of gold coins were added, including the "crown" and "half crown", worth five shillings ("5/–") and two shillings and six pence ("2/6", "two and six") respectively. Henry VIII's reign (1509–1547) saw a high level of debasement which continued into the reign of Edward VI (1547–1553). This debasement was halted in 1552, and new silver coinage was introduced, including coins for 1d, 2d, 3d, 4d and 6d, 1/–, 2/6 and 5/–. In the reign of Elizabeth I (1558–1603), silver d and d coins were added, but these denominations did not last. Gold coins included the half-crown, crown, angel, half-sovereign (10/–) and sovereign (£1). Elizabeth's reign also saw the introduction of the horse-drawn screw press to produce the first "milled" coins.