Is this a Civil War Union Navy Button?

[Iron Buzz]

That is what my internet research has come up with, but I'm not trusting it completely, and hoping for an expert opinion.

I found it in the yard of a house that was built in 1911, but it is adjacent to one from 1880, and an 1851 house is not far away.

 

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[HuntinDog]

Beings as your button looks to have a self shank iron back.
I would date it to the mid 1900's and would say it's a fashion or civilian button.
Military buttons almost always have a brass back.

 

[Javadroid]

Would it be likely that a Union Navy button would be in Minnesota? I'm not all that familiar with the naval activities up there during the War of Northern Aggression, but when trying to identify a relic, I try to consider location and what's most reasonable to find there. Doesn't always play out that way, but it's a good starting point.

 

[Iron Buzz]

Yes, the back does seem to be iron, and neither house dates to Civil War era. But was that design used in the mid 1900s?

 

[Iron Buzz]

Beings as your button looks to have a self shank iron back.
I would date it to the mid 1900's and would say it's a fashion or civilian button.
Military buttons almost always have a brass back.

Post #2 in this thread agrees with you.

 

[CivilWarFan]

This button is not from the Civil War unfortunately. It is from the 1890’s-1910’s. It is definitely a navy button though.

 

[Hillbilly Prince]

Would it be likely that a Union Navy button would be in Minnesota? I'm not all that familiar with the naval activities up there during the War of Northern Aggression, but when trying to identify a relic, I try to consider location and what's most reasonable to find there. Doesn't always play out that way, but it's a good starting point.

Never hear of the Minnesota Naval Base I see.