Ladies Vintage Raymond 15j Bubble Ball Skeleton Watch on Carl Art Sterling Pin
The bubble watch has a skeleton back so you can see the movement. This is a Raymond Watch Co. Swiss made watch sometimes called a nurses watch.
It hangs upside down on a sterling Carl Art watch pin. Works great and keeps good time with a smaller second hand and a black face. Has some fine scratches but looks amazing, most likely 1940's to 50's. As with all vintage estate watches I recommend they be cleaned and lubed by an experienced jeweler to keep them running well.