Dieges & Cust Pin

I found this pin while rummaging through some old stuff. I am wondering what it is all about. Does anyone know what it was for, what it signifies, etc.? Is it made of brass? Any info. about this company: Dieges & Cust. I am trying to figure out how and who in my family owned it. Thanks everyone. The front reads:

"AUDACITER"

The back:

"DIEGES&CUST
NEW YORK"

There are actually two of the exact some pins.