59 years ago back to July 7, 1963 and the awarding of the Dutch Erasmus Prize to Austrian theologian and philosopher Professor Martin Buber. I’d love to see a closeup, technicolour view of Queen Juliana’s draped turban! And the guipure lace on Princess Beatrix’s transparent hat with upturned brim looks impressive as well.
Images from Getty and social media as indicated
Royal Hats 
I had to look up “guipure lace” as I wasn’t familiar with that term, and found some impressive examples of just the fabric by the yard on Google (as well as impressive prices). I took one philosophy class in college (pass/fail, thank goodness!) and I believe might have read some of Martin Buber’s work. Jimbo, why lemon yellow?
Matthew, why lemon yellow? Maybe it’s wishful thinking on my part – I think it would look very nice on Beatrix. Or perhaps it’s like taking bets on HM’s color ensemble at Royal Ascot.
👍 — Jimbo, I like your thinking, and agree that yellow is a good color for her. I wonder if she ever wore the suit again later, without a hat — that would give us a clue.
This looks like a forerunner of Princess Beatrice’s standard cake hats! I love the lace!
You beat me to the thought! 🙂
I was thinking the same; it’s like a cupcake hat this time! (and I mean that only in the best way)
Both hats today look very interesting. Is Juliana’s turban a shiny straw?
I really like Beatrix’s hat and beautiful lace trimmed suit. Notice the blouse is all lacy. Not able to find color photos, I did find another outing of it, though, the next year. She wore the ensemble again to open a blind library in the Hague. I’m guessing the color is lemon yellow.
May 27, 1964
https://www.alamy.com/stock-photo/princess-beatrix-1964-library.html?imgt=0