| http://www.w3.org/ns/prov#value | - Rozema yet)I guess that the city(assay office) of English marks would be a tenuous clue, anyway, and it is unlikely that there is a maker's mark on most such fittings.Mine is identical to Ivo's I think. and I can not show anything better than he has.i.e.http://glassgallery.yobunny.org.uk/displayimage.php?pos=-5371
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