🔎 UNIDENTIFIED Need help with ID

[savinghistoryalway.s]

I see green patina I assume it’s at least 100 years old but is it a washer?

 

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[Nathan W]

View attachment 2171177View attachment 2171178
I see green patina I assume it’s at least 100 years old but is it a washer?

Get some of the compressed dirt off it may reveal some letters or numbers. That would help for a starting point

 

[ToddsPoint]

Bicycle bottom bracket part? Just a guess.