This is a traditional wooden butter churner lid or paddle frame, often used in older or rural homes to make butter by hand.
Here’s why:
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The curved wooden frame with slats looks designed for manual churning, providing a sturdy handle and structure.
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The notched side suggests it can be adjusted or locked into different positions.
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The flat base would sit atop a churn or barrel, with the frame allowing for a rocking or pumping motion to agitate cream into butter.
These kinds of tools were common before electric churners and were part of everyday dairy processing.
If you want, I can look deeper into the exact regional style or confirm any specific function!