High efficiency sealed beam reflector lamp with reflective surface of heat treated silver

A reflector lamp, comprising:

• a reflector body of vitreous material having a longitudinal axis, said reflector body including a basal portion, a rim which defines a light-emitting opening of said reflector body, and an inner reflector surface which extends from the neck portion to the rim of the reflector,
• a lens of vitreous material fused to said rim,
• a light source arranged within said reflector body, and
• a reflective coating on said inner reflector surface, characterized in that:
• said reflective coating comprises a first coating portion extending from said rim towards said neck portion and a second coating portion which extends from an axial position spaced from said rim to said basal portion, said second coating portion consists essentially of heat-treated silver having a diffusely reflective surface and said first coating portion consists essentially of a first material other than silver.