Postby dognose » Tue Feb 12, 2013 6:51 am
Hi,
These marks are not hallmarks. Hallmarks are struck by an official body following a successful assay, what you have are marks stuck by the maker/retailer. The reason why one mark is defaced is most likely because it was the first mark stuck on the piece, and then it passed into the hands of another, likely that of the owner of the quatrefoil mark, who was perhaps a competitor, and thus did not want to promote the name of the original marker.
Trev.