Of Her Majesty Queen Elizabeth II by. These legal tender coins have been struck to proof quality using specially prepared dies and highly polished blanks.The item "2017 Nations of the Crown 12 Sided £1 One Pound Platinum Proof Coin Box Coa" is in sale since Monday, August 28, 2017. This item is in the category "Coins & Paper Money\Coins\ World\Europe\UK (Great Britain)\Commemorative". The seller is "thelondoncoincompany" and is located in London. This item can be shipped worldwide.