This link will answer your question on the fencing promotion labels: https://www.alphabetilately.org/Oly/1940S2.html Scroll down a bit. The labels will appear on the left side of the screen.
Thanks Michael.
The last one appears to be celebrating the wedding of then-Princess Beatrix of the Netherlands (the future Queen Beatrix) to Prince Claus. The wedding was March 10th, 1966.
Thank you. That is what I thought after I posted this.
