ATTRACTIVE KING WILLIAM IV Halfcrown 1837 SILVER COIN. Start Price USD 155.00 Current Price USD 155.00 Time Left - Bid Count 0 Buy It Now Price - Reserve Price - Start Time Friday, October 03, 2008 End Time Sunday, November 02, 2008 Location North York, Ontario See more about 'ATTRACTIVE KING WILLIAM IV Halfcrown 1837 SILVER COIN.' Description ATTRACTIVE KING WILLIAM IV Halfcrown 1837 UK SILVER COIN William IV was born on 21 August 1765 and ascended the throne on his elder brother's death. 1830 - 1837. Check out my other Gold coin listings on eBay. Place a Bid!