🔎 UNIDENTIFIED Just as spot and represent this but not have?

[Truth]

Do you think this is a close enough era

 

[GoldieLocks]

Close enough era?
I will bet this button was made between the late 1960's-1989

 

[ticndig]

1800s underwear buttons

 

[villagenut]

I find similar underwear buttons that became popular after the pewter ones went obsolete during the 1860 period. They are tinned iron though. Not sure what yours is but I agree with ticndig.