Nice old button, can't see a backmark but I think WW1? Maybe.

[Crossmod]

I cannot clean the rusty bits off the back. Found in my backyard.

Dedham Massachusetts

I thought it was the ground wire from my pool pump and wasn't going to dig it!

 

[stetam]

With the corroded back that would be a civilian button. Most likely a coat/blazer. I have gotten several teasers like that.

Steve

 

[hoser]

Still a very cool find. Well done.

 

[Wolf-Dog]

That's a neat find!

 

[rreahard]

Nice one! Congrats!