Don't know much about these except they're all above my price. Works, apeirs to be carved shell cameo, has.925 on back about a rectangular inch and 5/8 or so thick. I'm firm at 300. The item "Vintage swiss sterling silver reuge miniature wind up cameo pendant music box" is in sale since Wednesday, May 02, 2018. This item is in the category "Collectibles\Decorative Collectibles\Music Boxes\1940-1970". The seller is "jamealla-11" and is located in Stewart, Ohio. This item can be shipped to United States.