Kongefamilien Royal Family postcard

[mayhem69]

Hi, This postcard came from my Wife's grandmother who sadly passed away. Anyway we found a postcard that reads on the back "Kongefamilien"
"The Royal Family"
"Die konigliche familie"
"la famille royale"
"la famiglia reale"
"la familia real"
card looks to be made by a co. named Agenda
bottom left says "Foto kgl. Hoffotograf Elfelt"

Front picture is i guess the royal family from around the 60's, man with dark hair around 35-45?, woman with brown hair around same age, children, 2 boys around 10-13?
Any worth to this card, if interested i can upload an image.
I also found an old postcard of aerical picture of the Old Town, The Royal Palce and the Town Hall. Foto Erik Claesson 8/23/49