This is a "Doll Top, Arms, and Legs" ceramic casting mold Valere F-75 by Jamar Mallory.
It is white with a mold which will create a doll's head and top of the body, two arms, and two legs when the mold's two pieces are put together.
The mold measures about 4" x 10" x 10".
It is in good pre-owned condition with some stains and chips.