I have a coin which I cant find in any of my books or online. It is a George III 1802 silver coin, 24mm diameter, quite thin. The monarchs head is George III and I can make out the name Georgius III The date is on the other side and is quite obvious to see 1802 This date is under a shield which is quartered ; 3 lions, welsh dragon, harp and I cant make out the forth The shield has a crown on top Around the edge of this side is MBF ET H REX FDB ET LDSRIATETE Any help please?