I've had this ring since the 70s. ALL of this pattern with the lazy lightning bolts have the exact band, [same sides and super thin rear of band..

you need the good photos to see if there were casting signs that got worn over the years. Or other signs we can inspect for to see if its a copy.. Like the rear band,,has to be very thin like the photos,,,and from rear taper up nice and even to the front of the ring..

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DSCN3160.JPG (35.94 KB, 67 downloads)