The then Crown Prince Olav of Norway celebrated his 50th Birthday with a Banquet hosted by the Norwegian Government at the Akershus Fortress in Oslo, which was also attended by King Haakon VII, Crown Princess Martha (wearing the Norwegian Emerald Parure) and Princess Astrid (in the Vasa Tiara), coming just after Wedding of Princess Ragnhild and the Coronation of Queen Elizabeth II, this was the family’s last celebration before the Crown Princess’ tragic passing the following year.
I don’t believe this was 1903…….