Metal Detecting Find what is it?

[Unitedstatesofamerica1]

 

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[G.A.P.metal]

Pewter salt or pepper shaker ?...my guess
Gary

 

[docholliday59]

Old ink well bottle.

 

[Fourman110]

I second the S&P shaker though don't think it's super old. I can't remember when manufacturing techniques that created a parting line came about but it's definitely after the quill and ink time frame.