Dear all, Please help to identify the mark, period, original country of this necklace. 1/Looks like a "II" in the Omega image. https://www.925-1000.com/pics/Ximg.jpg 2/Marked "JW". https://www.925-1000.com/pics/Ximg.jpg 3/It's really hard to read, coz it's not clear naturally. Ho...