civil war buttons? and a couple what is it

[Smilodon]

My buddy took me to a new spot and found some treasures. I was excited to find my second sc button, shank intact but folded over, the other one looks like a two cannons with an exploding cannon ball above it. Have not cleaned them at all and will soak them in water overnight. Also found this oval piece which I know I have seen before but just cant figure it out. I can wait to go back but the heat here is brutal. any ideas or identifications on these items, thanks

 

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[cudamark]

The oval item looks like a door latch thumb button.

 

[DiggerKid2003]

I believe the button is an ordnance button. Really nice find!

 

[Hawks88]

Nice finds. Congrats.

 

[Professor of Engineering]

Sweet digs, congratulations!