Featured in Danish homestyle magazine Bo Bedre in January 1962 when his celebrated Symfoni (penultimate image below) was already on prominent display in Copenhagen’s illustrious interior design store Illums Bolighus (final image), this Preben Dal light is composed of the same diamond-shaped facets as the Symfoni, but the overall form is less complex. Both lights were produced by HF Belysning, aka Hans Følsgaard Elektro A/S. We have translated the Bo Bedre piece from the original Danish:

Dip the light in soapy water and it is clean
This light has several advantages. It is formed by rhomboid-shaped metal pieces that are welded together into pentagonal rings and then powder-coated white. All slats are vertical, so that there is good ventilation in the lamp, and the dust does not settle on them. One can easily lift the shade from its bracket and clean it – simply dip it into a bucket filled with detergent or soapy water. The lamp’s maximum width is 25cm, its height 23cm, and it can take bulbs of up to 100 watts. It costs 75kr with fitting and lead. Preben Dal for H Følsgaard.