Several years ago, the Vintage Danish Lights blog posted about the debate and received an email from Hans Marvell, from &tradition, the company that curently produces Utzon's Tivoli lamp. He stated that Utzon was definitely not the designer of the Søværnspendel but that he might have an interesting theory.
Marvell said that Nordisk Solar Compagni was the first to produce the lamp, followed later by the better known version by Louis Poulsen, who gave it the name Søværnspendel and who named the Søværnets Bygningsdistrikt (Navy Buildings Department) as the designer. A 1956 issue of Mobilia, a Danish magazine, had previously stated that the light was not designed by Jørn Utzon.
However, Marvell pointed out that Utzon's father Aage was an architect and designer for the Danish Navy, so it is possible that he might have had a hand in its design. Wouldn't that be an interesting coincidence?
|Nordisk Solar Compagni version|
|Louis Poulsen version|
etsy.com - OldAndCold