William III, also widely known as William of Orange, was sovereign Prince of Orange from birth. He was born in Binnenhof, South Holland, Netherlands.

William III was King of England, Ireland and Scotland from 1689 until his death in 1702, co-reigning with his wife, Queen Mary II (m. 1677–1694, her death). He was also know as King Billy.

The regnal years for William III coins were:
1699:UNDECIMO; 1700:DVODECIMO; 1701:DECIMO TERTIO.

On coins, William is usually spelled as latin: Gulielmus III.

		1696 Half Crown Mintage: N/A
		1698 Halfcrown - William III Mintage: N/A
		1698/7 Half-Crown - William III Overdate Mintage: N/A