🔎 UNIDENTIFIED Big button

[demano]

Found this button at an 1870's home site that I have found several cival war buttons at. Is this a military button? Any guess of age? Has____bury on the back. Thanks for any info.

 

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[cw0909]

I cant read/see the mark, __bury, since you can see bury I looked at waterbury
in fashion and found this

Pattern #80884 – Speckled pattern

Pattern #80884 – Speckled pattern – Waterbury Button Company

waterburybutton.com