Postby paulh » Fri Jul 20, 2007 5:32 am
The marking of O.S.P. was never specifically regulated. It was more a case of what was permitted rather than what was required. A Parliamentary Act of 1784 said that materials plated to resemble silver made within 100 miles of Sheffield were permitted to be marked with certain marks, which should contain the name of the manufacturer together with any symbol which did not resemble a silver mark used by any of the assay offices. (Such as the Sheffield Crown).
These marks were registered with the Sheffield Assay Office from 1784 the first one being W. Green & co registered on the 8th of September. But having said all that, it was still not compulsary (and it still isn’t) to mark silver plated wares. There must be a conflict of interests here, as with your kettle. If I had made a piece that good I would want people to know that it was me that made it. However, the customers would probably prefer no markings, so that the O.S.P. would be easier to pass off as solid silver.
Paul.