In un annuncio su Ebay ho trovato questa singolare "descrizione", che mi ha lasciato un po' allibito. Voi che ne pensate?
"A marked piece, "18K Plumb" or "18KP" still means that the part is 75 percent pure gold. "P" or "Plumb" is simply an old term that means that the piece has a gold content level as it is recorded. In the United States, this means that something marked 18K or 18KP Plumb must be within three parts per thousand of 18 carats. By checking the piece of jewelry with "Plumb" or "P", the manufacturer claims that their work complies with the law."
