Victoria 1845 Sovereign Roman type I resulting from 1 over inverted 1

Victoria (1837-1901), gold Sovereign, 1845, variety with 1 in date over inverted 1 giving an impression of a Roman I in date, high 45 in date, first young filleted head left, W.W. raised on truncation for engraver William Wyon, date below, Latin legend and toothed border surrounding, VICTORIA DEI GRATIA, rev. crowned quartered shield of arms, laurel wreath surrounding, emblems below, Latin legend and toothed border surrounding, BRITANNIARUM REGINA FID: DEF:, weight 7.96g (cf.Bentley 51; cf. Hill 28C; S.3852). Toned, dig on cheek, other light surface marks, otherwise practically very fine, and very rare.