IN THE PAST COPPER AND BRASS BLADES WERE USUALLY FOR CEREMONIAL USE AND OFTEN IT WAS THOUGHT THAT SUCH BLADES WOULD PROTECT AGAINST SOME FORCES OR EVIL SPIRITS OR CREATURES WHERE IRON WOULD NOT. I THINK DURING THAT TIME THE BLADES WOULD HAVE BEEN KEPT POLISHED AS THE PROTECTIVE POWERS WOULD HAVE BEEN STRONGER AND MORE OBVIOUS TO THE EVIL CRITTERS. BASED ON SOMETHING I READ LONG AGO SOMEWHERE SO CONSIDER IT CONJECTURE OR CORRECT ME.
TODAY I SUSPECT IT IS DONE AS BLING!! THE COPPER BLADE DOES SET OFF THE BLACK HANDLE.
AND LIKE MANY I DO LIKE MY BLING