The service took place on 1 July 1969 in Caernarfon Castle. It was the first such ceremony since 1911 and it became the launch pad for the 20-year-old prince to assume his public role of heir to the throne.
BBC: Video (http://news.bbc.co.uk/olmedia/cta/events02/uk/jubilee/archive/charles_investiture.ram)
The Coronet of Charles, Prince of Wales was produced by a committee under Antony Armstrong-Jones, 1st Earl of Snowdon, then husband of Princess Margaret, Countess of Snowdon.