Watch List notes:

Sovereign 1880 S.3856B Faint traces of the second 8 being struck over 7, WW buried in truncation, B.P. in exergue, S.3856B NEF. An unusual overstrike with evidence of the overstrike below the 8 and in the top curve of the second 8, additionally the last three digits of the date are double struck

Estimate: 400-500 GBP