QUOTE(Chemyst @ Jan 18 2008, 07:31 PM) [snapback]482770[/snapback]
QUOTE(Chemyst @ Dec 28 2007, 11:40 PM) [snapback]460689[/snapback]
Can anyone break down the what the specific marks are? My Nelson has the following on the band:
CS - makers mark I imagine for Conway Stewart
2 Hemisphere globe with a 750 in it
750 in a box
R in circle
A crown - some assay office mark in England I think
h in a box
Mary Burke was kind enough to help me out with 2 of the hallmarks:
A crown - **symbol for gold -- 9ct [375], 14ct [585], 18ct [750], 22ct [916]**
750 in a box **18 carat gold**
Looking into Yard-O-Led hallmarking, I see the h is likely a date code. It appears they cycle through letters and then change the shape around the letter in the next sequence. No idea what particular year h boxed corresponds to.
I think the crown symbol is the assay mark for Sheffield. CS pens are made in Plymouth (in the Southwest of England), which is nowhere near Sheffield (the North). However, Plymouth's local assay office, in Exeter, was closed over a century ago - most English assay offices were dismantled over the last couple of centuries (there used to be around a dozen), to leave just three by the latter 20th century (London, Birmingham and Sheffield), so there is little 'regional' logic in English assay marks these days.