This is a rare antique wall mount articulating mirror from the Victorian era c1890. The arm has a beautiful intricate floral Eastlake pattern and beading on the arm. It is made of nickel plated brass.
It folds flat against the wall and will extend out on its arms 19". The mirror itself is 7" in diameter and has a beveled edge. It has no chips or cracks, but has some de-silvering and cloudiness, which is expected with this age. It is not marked with a manufacturer name, but I believe it to be made by Kato. A lovely addition to your Victorian bathroom!