Found this hat insignia in a box...noted 1790

So I am known to local auctioneers because I buy the old boxes that are just full of stuff. I like going through them and sometimes find something like this.

Engraved on the front is "Constitution of the US". Someone put a little note on the back that reads "1790-1800 Brass Constitution of the US emblem of the top of a hat" Is 3 inches tall.

I am not even sure that this is military but I though maybe I would start here. Apologies if not...if you could point me in the right direction. Is this a common insignia? Do you know its history?

Thanks in advance

 

Maybe not actually that old. Badge from Knights of Columbus (founded 1882).
https://www.worthpoint.com/worthopedia/lot-knights-columbus-sash-templar-404321192

 

There it is. I saw other I remember seeing some ephemera in there for KOC as well. Would make sense. Thanks for help