Victoria 1845 Sovereign Roman I for 1 in date, very rare

Victoria (1837-1901), gold Sovereign, 1845, with Roman style I for 1 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 7.93g (Bentley 51; Marsh 28C R2; S.3852). A number of light surface marks and nicks, almost very fine and very rare.