Watch List notes:

British Coins, William I (1066-1087), penny, sword type (BMC. VI variety), Dorchester, Oter, crowned bust facing, holding sword, to the left a trefoil, to the right a large cross, rev. OTER ON DDRRCST, wt. 1.30gms. (S.1255 var., N.846-1; BMC.403) extremely fine, with light tone, extremely rare
This extremely rare variety exhibits a large cross motif to the right of the bust and is only known from this mint. Its exact significance is unknown.
Estimate: (2200-2500 GBP)