Gold ring hallmark

[jimzz977]

I found this GOLD ring at a street tearout fee months ago, wondering if anyone seen this hallmarks , I believe it AGO 710k , any ideas would be Appreciate

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[jimzz977]

I never seen 710k??

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[Indian Steve]

Could the 7 be the size?

 

[jimzz977]

I checked my photo up side down I believe it says I love...

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