It is a One Penny from Great Britain. Georgivs V Dei Gra.Britt.Omn.Rex.Fid.Def.Ind.Imp means "George V by the Grace of God, King of all British Terretories, Defender of the Faith, Emperor of India". This inscription is on the pre-decimal coinage of Britain and its commonwealths. The Commonwealth coinage will identify its origin (such as Canada or Australia). The coinage of Britain itself does not inscribe its origin, like the coin you have.