Winnebago Bone Earrings

After much conversation amongst Tad’s dealer friends, regarding these Winnebago Bone Earrings, they conclude they are earlier than we first thought.
Circa 1915-30s
The Winnebago (from Wisconsin) call themselves Ho -Chunk (“People of the sacred Voice” or People of the Big Voice”).
There is nice wear and patina. Elk bone does ot turn dark.
rather a “fuzzy light patina”
The wooden beads have been added later
The materials of the eys is unknown.
We all think these are amazing!