Henry IV coins are usually classified into two groups. In 1412 the weights of both the Noble and the Penny were reduced, mainly because the King was short of money and bullion was scarce. So the period 1399-1412 is known as Heavy Coinage, and the period 1412-1413 is known as Light Coinage.

1412-1413 Groat - Henry IV - Light Coinage Mintage: N/A