Eyes only find.

[oldsoapy]

Found this whilst Detecting old School yard . it is made from porcelain or pottery and has the wording
"BIRDS PATENT" Also has two indents as it it swiveled. I can't find any reference to it anywhere, any ideas?? John.

 

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[shaun7]

Looks like a bottle stopper missing it's rubber and spring thing.

 

[DCMatt]

Looks like a bottle stopper missing it's rubber and spring thing.

Agree - bottle stopper.

DCMatt

 

[oldsoapy]

l think you are both right, it's just an unusual type. John.