ANTIQUE retailer COPPER BUTTERFLY brooch

WHEN I retailer ACQUIRED THS BEAUTIFUL LARGE COPPER BUTTERFLY IT WAS LITTERALLY BLACK. IT TOOK A LOT OF CLEARNING, BUT LOOK AT IT NOW. IT IS STUNING. IT IS MARKED ON THE BACK WITH A MAKERS MARK, BUT I HAVE NO IDEA WHO IT IS , ALTHOUGH I HAVE RESEARCHED IT. IT THINK YOU WILL AGREE THOUGH THAT IT IS VERY PRETTY AND WELL MADE. C CLASP WORKS WELL. JUST DO NOT OVER TURN IT, OR IT BECOMES LOOSE AGAIN, I THINK THE THREAD JUST NEEDS TIGHTENING. AS I SAY IT IS FINE IF YOU DO NOT OVER TURN IT.