Watch List notes:

William the Conqueror (1066-1087), 'PAXS' Penny, 1083-1086, Norwich [?], Eadwine [?], [+] P[IL]LELM R[E], crowned facing bust, trefoil over left shoulder, trefoil-tipped sceptre over right, rev. + E[DPI]NE ON [NORÐPI, cross potent, P A X S in quarters commencing in fourth, 1.36g, 3h (North 848; BMC VIII; Spink 1257), struck frustratingly flat at peripheries, otherwise richly cabinet toned, about very fine for issue.
The mint signature is not clear. Cursory inspection of EMC and SCBI reveals a number of Chichester-signature coins with the P A X S commencing in the fourth quarter
Estimate: £300 - £400