God speed the plow

[Bharpring]

 

[Denny45]

What kind of button is it?

 

[Bharpring]

Copper or brass, the engraving is a plow

 

[Bharpring]

Colonial

 

[Bramblefind]

There's a button pictured in Albert's in the Patriotic and Commemorative section which has a similar plough / plow - not the same though. The break on yours is interesting - it's so uniform looking.