Watch List notes:

William I (1066-87), Penny, 0.96g, Contemporary forgery of Canopy type, Uncertain mint and moneyer, bust facing crowned and diademed within canopy of two columns, rev. +WUL[ ] ON LI[ ]NI, double quadrilateral with incurved sides, fleury at the angles; annulet in centre (N843; S1252), pitted surfaces with blundered legend, nearly very fine, unusual.
:Bt. April 1955An accompanying ticket gives the reverse reading as PVLFINC ON LVNDI though this is by no means certain. Worthy of further research.
Estimate: £100.00 - £150.00