The event is the wedding of Princess Sofia and Juan Carlos,Athens 14 May 1962.I do not really understand what tiara Queen Anna is wearing,but is looking like Princess Irene of Aosta tiara. Knowing that Queen Mother Hellen also participate at the wedding ( you can see in some pictures from the pre-wedding ball)and because there was one tiara in romanian RF, I think it was a probleme. But what was Princess Irene wearing then?