Obverse:

CNVT RECX A. Diademed bust left with sceptre.

Reverse:

EDPERD ON PELI. Voided short cross with pellet centre.

Slight wave to flan otherwise about extremely fine and extremely rare. Only one example of this moneyer for Wallingford listed on EMC/SCBI (from different dies). We have only been able to trace one further example, which is from the same die pair. 

Ex Royal Berkshire Collection [bt M. Vosper 1999]