Incredibly amazing ring you found there, I know how you feel.
I found a similar ring last week on my birthday!!
My imagination tells me that a Jesuit fur trader was here near Lake Michigan and he was shacked up for the winter.
He was in desperate need of food and traded this ring to a local injun for some deer meat.
After 30-40 years went by, this injun passed on to the Great Hunt in the sky.
The ring was dropped and forgotten for over 300 years, until I got my 5x8 coil over it