Rectangular mirrored glass photo frame by Fontana Arte, 1950s.
Mirrored glass was a popular material for Mid-Century Modern design due to its reflective qualities and sleek, modern look. The glass is cut and shaped to create an interesting asymmetrical pattern that adds visual interest to the frame.
The use of this material also creates a sense of depth and a play of reflections which can be used to highlight the photograph or artwork on display. The frame has a simple look, with clean lines and a minimalist design that puts the artwork/photo at the center of attention.