Green metal ibject

[Whatdayagot]

I found this at a farm that dates back to the 1700s the owner of the farm said his dad found a similar one years back n they believe it's a tool to help close the coat to assist in buttoning it and for tying shoes/boots (colonial days) it's round like a circle on one end and beveled then at opposite end is bent like a tool to grab something any one recognize of ever find one or know anything about it? Any help appreciated . It's the green colored metal object in the middle

 

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[ironhorse]

A closer look might help

It looks like a bent up and broken shoe buckle frame, part of one anyway

 

[Dakota Sioux]

looks like old wagon neck yoke hook

 

[Whatdayagot]

Thanks for the info n it does look like the wagon neck yoke I'm gonna get a better photo the landowner wanted to hold onto it he is into history n thought it was the coolest find of the day