10 Crowns - Elizabeth II The Thames Diamond Jubilee Pageant

The Thames Diamond Jubilee Pageant on 3 June 2012 assembled over a thousand vessels along a 7-mile stretch of the river — the largest flotilla seen on the Thames since the coronation river procession of 1953. Persistent rain and near-freezing temperatures that day did little to thin the estimated million-strong crowd along the banks.

Tristan da Cunha, a British Overseas Territory so remote it holds the distinction of being the most isolated permanently inhabited archipelago on earth, has issued commemorative crowns since 1977 largely as a revenue stream, given the island's near-total absence of conventional commerce.