I know this mound probably isn't anywhere near to location of the relic. But seeing it made me go..hmmm... It is attributed to the Adena culture.
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The serpent mound is south and slightly east of Michigan.
A trade /travel route ran east/west just below the current southern Michigan border.
S.E. part of the lower peninsula had a long history, the S.W. too but just above the S.E. is a long time lithic material area.
Old copper culture ,I think red earth was around the great lakes too ,and the mound builders were well into Michigan in time.
Mounds near me kinda mid Michigan , are about as distant from the southern border as that border from the Serpent mound.
Similar/matching lithics have been found at similar distances ,suggesting more than seasonal migrations from valley's to lakeshore , though the north south estimation of travel ,while more distant could have been a migration.. Certain political/tribal conflicts could have caused a nearer/faster course to be risky or denied and multiple tribes existed at multiple times.
The one case of lithics had varied types representing varied cultures deposited at the same estimated time in those two sites , north and south of each other with quite a distance between them (my rough guess a hundred miles) making for a curious scenario.
Warfare shuffled the deck here repeatedly.
None of this means the item in O.P. is related to an Ohio mound. Yet may be related the mythology of a serpent.
A creature found farther west and all around the great lakes in native creations representing beliefs.
Being recovered in the vicinity of mounds and the great lakes area arouses my personal speculation of a time predating Mississippian or death culture era.
A very interesting piece it would be great to find out more on.