Alderney, a Crown dependency with a population under 2,000, has issued commemorative coinage since 1989 under authority granted by the UK Treasury — not the Royal Mint, which handles British issues separately. The Queen's Platinum Wedding anniversary in 2017 marked 70 years of marriage to Prince Philip, a duration unmatched by any previous British monarch.
The .925 silver specification at this weight puts it in line with standard proof crown-sized issues from the period, struck by Pobjoy Mint on Alderney's behalf.
Alderney, a Crown dependency with a population under 2,000, has issued commemorative coinage since 1989 under authority granted by the UK Treasury — not the Royal Mint, which handles British issues separately. The Queen's Platinum Wedding anniversary in 2017 marked 70 years of marriage to Prince Philip, a duration unmatched by any previous British monarch.
The .925 silver specification at this weight puts it in line with standard proof crown-sized issues from the period, struck by Pobjoy Mint on Alderney's behalf.