The British 1689 Halfcrown has two versions, First Crowned Shield and Second Crowned Shield, having eight and seven variants respectively. A British 1689 silver Halfcrown (Wi
…lliam and Mary)(First Crowned Shield) depending on the variant, circulated but still in good condition, might fetch anything from £100 to £2,250 GBP. A British 1689 silver Halfcrown (William and Mary)(Second Crowned Shield) depending on the variant, circulated but still in good condition, might fetch anything from £100 to £1,750 GBP. NOTE - The reverse of these coins is upside down to the obverse. This is normal. The values quoted are the best possible for the best specimens in their grades, but may be significantly lower due to varying demand for the coin and the prevailing economic climate. A reputable coin dealer will be able to assist with a positive identification and give a more accurate valuation based on inspection of the coin. ( Full Answer )