The invention relates to a mirror comprising a mirror surface. The mirror surface is formed from a composite of a mirror film and a substrate, wherein the mirror film is arranged on the substrate and has at least one polymer layer as well as a metal layer arranged below the at least one polymer layer. The objective of the invention is to provide the mirrior which can be manufactured in a simple manner and at the same time has improved corrosion behaviour. According to a first teaching to achieve the objective, a sealing seam for corrosion protection is provided at least in certain regions, the sealing seam is formed by an integrally joined bonding of the polymer layer with the substrate, and the metal layer is interrupted in the region of the sealing seam.