Victoria 1846 Sovereign Roman style I in date instead of 1

Victoria (1837-1901),gold Sovereign, 1846, with roman style I in date for 1, 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 7.95g (cf. Bentley 979; Marsh 28C R2; S.3852).Toned with surface marks and nicks, otherwise good fine, the exact variety not present in the Bentley collection.