Civil War Mystery Copper

[Patriot Relics]

Hey guys,

Recovered this from a Civil War battery- cast copper...any ideas?

 

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[ironhorse]

candlestick top if I had to guess

 

[callicles]

Could it be some sort of copper fuse adapter for a Borman fuse?

 

[steelheadwill]

Other than its copper composition it is nearly identical to many cast in place Plumbing flange/seals I've had the pleasure of recovering, these appear to remain long after iron pipe and fixture have rusted away

 

[Patriot Relics]

It's surprisingly heavy, have dug cannon fuses nearby. Candlestick is a good guess but seems to wide