Mint, below is the response from the Curator at the Ohio History Connection. Using logic he did narrow the search, but a positive ID has thus far eluded him and his colleagues. If you haven't done so already I recommend showing it to one or more Archeologists/Anthropologists who are familiar with the mounds and that area of the state to get their input. Better yet, invite them to the spot where you found it, as seeing the location first hand will help them re-construct the context that may mean the difference between IDing the artifact and not. Good luck.
"Being as it appears of cast brass, as it so appears, it is a post-contact era piece. Copper materials as associated with Michigan mound culture would have greater degrading due to reaction with water or air and be pitted. The green oxidation here indicates a relatively high copper content, but being so well preserved it is assuredly brass and with a reasonable amount of nickel. Most unfortunately, as a surface find, and a direct lacking archaeological (stratigraphic) context, it will remain a mystery unsolved. Unless John Schweikart here is correct and it is a decorative pull that has parallels elsewhere.
If it exhibits use, as say the open end shows some use pattern, it might be an early trade item stylized to the benefit of a Native trade partner. Otherwise I could not venture to say. The fact it’s found in association with a bottle (etc?) dump (?) also indicates a likely historic association. Heck of a thing to throw away but I’ve seen many such (“they threw that away?”) examples."
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