The use of hallmarks on silver has a long history, dating back to at least the sixth century AD.
The use of hallmarks on silver has a long history, dating back to at least the sixth century AD.
Email: ncptt@nps.gov
Phone: (318) 356-7444 · Fax: (318) 356-9119
NCPTT - National Center for Preservation Technology and Training
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Natchitoches, LA 71457
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