Spot perforated sheet metal around 1960

Spot to pinch in perforated sheet metal in a woolly meccano woolly dark chocolate (95% cocoa minimum). The illuminating part is attached to a kneecap to change its position, the clamp has a hole that also allows it to hang upside down. Rational design, sober color, classic pattern of small holes: nothing to add, nothing to remove remains to fix it wherever it wants because it is he who decides, of course. From unknown father and mother, the origins of this orphan are to be sought by lighting designers of the 60s like the famous jacques biny.