This is a vintage clear crystal glass swan dish with clear round marbles by an unknown maker.
It resembles the style of Duncan Miller with the elongated neck and rounded head as well as the open back to fill with whatever you like.
This particular one includes a bag of round clear glass marbles some smaller and some larger.
The swan measures 8" in total length, 6" tall to the top of the head, and 4.5" wide at the widest part of the bowl.
It comes in great pre-owned condition.