Dug a 2 piece Navy button today - Need help with ID

[screwynewy]

I was hunting a mid 1700's home site yesterday and dug several buttons including this two piece Navy button with a Scovill backmark. I cleaned it with aluminum jelly and it came out great with a little gilt still shining through. I've researched this button style and can't figure out if this button is from the Civil War or later. Can anyone help with a positive ID and date?

 

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[SkyPirate]

Nice find!

 

[TheCannonballGuy]

You did not tell us the button's size. Need precise measurement in millimeters or sixteenths-of-an-inch to be able to narrow down its date-range.

 

[screwynewy]

You did not tell us the button's size. Need precise measurement in millimeters or sixteenths-of-an-inch to be able to narrow down its date-range.

Sorry, It's exactly 23mm in diameter.

 

[steelheadwill]

Anchor in front of wing, lacking RMDC or dotted rings USUALLY date Post CW,
Tice NA 230 A17 appears very similar to yours and is described as CW era.
wait for CannonballGuys feedback.
Beautiful Navy Button !!