1988, Great Britain. THE TENTH ANNIVERSARY OF COINEX (Coin Show), AND THE TERCENTENARY OF THE EVENTS LEADING TO THE ACCESSION OF WILLIAM AND MARY. Struck by the Royal Mint. Silver 65mm, 155 grams. Obv: An oval, with busts of William and Mary,? above two ships. Rev: An adaptation of the “cartwheel” twopence reverse depicting Britannia seated. In a clear plastic capsule set in a case. With certificate. Proof finish. $200. Sorry, SOLD