Watch List notes:

25 Pence 1981 Royal Mint Trial, nine sided, Reverse: EXPERIMENTAL COIN 1981 on raised broad rim, around coat of arms ROYAL MINT on ribbon below, Obverse: ROYAL MINT TRIAL on broad raised rim around crowned orb UNC in a London Mint Office box, no certificate, believed to be one of only a small number in existence

Estimate: 300-500 GBP