This pin is in great condition. Size is just under 2" in diameter. Great care has been taken to securely prong set each of the small brilliant and the large center stone is set nicely in a bezel. After much examination, a tiny maker's mark the size of a pencil dot was found. The mark appears to be either CT or ET. There is some very minor wear to the stones only visible under a 10x loop. Tests positive for sterling silver although it is unmarked. Most likely Bohemian/Czechoslovakian.