Sterling Silver Rings - Help with Maker's Mark

[RustyRelicHunter]

I purchased several sterling silver rings from a yard sale recently. They look like the type from QVC or HSN. Does anyone recognize the maker's marks? I have looked for hours and can't figure them out. Any suggestions will be appreciated!

 

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[G.I.B.]

American marks

You can dig through this site until your eyes are crossed.