Style of Ring

[shub33]

This ring stumps me. There are no marks but tests positive as sterling silver. I am not sure of the style nor the age. Anyone want to jump in? Thank you in advance for looking.

[AG2012]

Hi,
It is Jewish wedding ring with centuries long history.
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Regards

[shub33]

Thank you once again, @AG2012! Could you guess the age of the ring? There are absolutely no Judaic symbols or even maker's mark.

[AG2012]

My assumption is based on the form; no Hebrew letters are needed.
The age is impossible to tell.
If feasible, have electronic testing done; several metals in the alloy beside silver indicates older production because of imperfect metallurgical techniques. Modern silversmiths buy 999 fine and add pure copper.
Regards

[shub33]

Thank you @AG2012!