Date Announced: 28 Oct 2014 Optical Surfaces Ltd. is a leading international supplier of concave and convex spherical mirrors made to your exact specification. A spherical mirror is a mirror which has ...

Unit 6 Segment L: Spherical Mirrors The properties of spherical mirrors are discussed.

Therefore, this is not an original convex glass Federal mirror, but a vintage (not antique) example that should still be valued for insurance purposes in the $250 to $350 range.