Help with ring inscription!


Bronze Member
Mar 29, 2009
United States
Detector(s) used
CTX 3030, TDI SL
Found this yesterday. It rang in like a quarter. Wiped the inside of the band looking for "925" or "Sterling", but instead saw "COAST" on one side, and "SS" and what I think is "ADI" on the other. Does anyone recognize these marks? Usually I think "SS" as stainless steel, but it rang up around 12-46 on the CTX. Thanks for any info!


  • Coast Ring full resized.jpg
    Coast Ring full resized.jpg
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  • Coast Inscription.jpg
    Coast Inscription.jpg
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  • Coast inscription SS ADI.jpg
    Coast inscription SS ADI.jpg
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Gold Member
Jul 9, 2012
San Antonio, Texas
Detector(s) used
Garrett 250
Primary Interest:
adi is the mark for amsterdam diamond and coast is a jewelry company from the 80's. The SS may well be stainless because adi 925 would be sterling. BUT, most likely, the ring is silver and copper. The silver is too soft and the copper makes it a stronger alloy. It is still a nice find...

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