This is an antique Derby Silver Company vanity mirror with a 6-footed silver plate base #2703.
This mirror and base measure about 1" deep and 17.5" in diameter, and the mirror measures 15.5" in diameter.
According to research, this piece was made between 1872 when the company opened and 1898 when it merged with International Silver.
These pieces are in pre-owned condition. The base has tarnish and the mirror has scratches and some white paint on the backing.