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Antique 1904 A.R.T. MFG. CO. NY Green Gold Filled Match Case Cover:
$69.00
My research states "Green Gold Filled " means 18k gold.
Not to be confused with Gold Plated. Contains 100x more gold alloy than gold plated jewelry
Green Gold
Green gold is an alloy with silver that is usually 75 percent gold and 25 percent fine silver. Green gold can be made with less silver but it usually includes zinc and copper along with the silver.