In very good, undamaged condition, the newer model PH5 by Poul Henningsen for Louis Poulsen, with the addition “Classic”. With this lamp, the blue, lower reflection hood is replaced by a transparent, light-emitting mat glass plate.
The following is copied from the site of Louis Poulsen:
The luminaire provides 100% glare-free light. The luminaire is designed according to the principle of a three-screen reflective system, which focuses the light largely downwards. The luminaire radiates both downward and lateral light and illuminates itself. In the PH 5 Classic, a warmer tint of light is created by a red cone inside and a small blue reflector.