What is this thing? Might be old but not sure....

[JakePhelps]

Found at a victorian-era apartment while looking for a ring, any ideas what it is? Its copper and says "EAO Pat'dt" Thanks

 

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[Bigcypresshunter]

Looks like a strap to fasten a ground wire to a fuse box or water pipe; and appears to still have a piece of ground wire attached. I don't know what EAO would mean...maybe electrical something.

 

[JakePhelps]

Thanks guys! Maybe EAO is an electrical company or something?