Guernsey – 25 Pence 1980 – Queen Elizabeth The Queen Mother 80th Birthday – Silver Proof Crown – OGP Description A beautifully struck silver proof Crown issued in 1980 by the Bailiwick of Guernsey to commemorate the 80th Birthday of Her Majesty Queen Elizabeth, The Queen Mother — one of the most beloved figures in 20th-century British royal history. Obverse: An elegant portrait of Queen Elizabeth The Queen Mother, surrounded by the inscription: QUEEN ELIZABETH · THE QUEEN MOTHER · 1900 · AUGUST 4 · 1980 — marking the exact date of her birth and the milestone of her 80th birthday. Reverse: The classic effigy of Queen Elizabeth II by Arnold Machin, with the surrounding legend: QUEEN ELIZABETH II · BAILIWICK OF GUERNSEY · 25 PENCE. The coin is struck to full proof standard, displaying sharp, finely detailed relief against deeply mirrored fields. No post-mint handling visible. SPECIFICATIONS Country Guernsey Year 1980 Denomination 25 Pence Metal Sterling Silver (.925) Weight 28.28 g Diameter 38.61 mm Quality Proof Subject Queen Mother 80th Birthday CONDITION Superb Proof — full original mint brilliance, deeply mirrored fields intact. No hairlines, no spots, no contact marks. INCLUDED Original navy blue leatherette presentation case Official commemorative booklet: "Her Majesty Queen Elizabeth The Queen Mother – 80th Birthday Proof Commemorative Crown" A highly collectible royal commemorative piece, complete with its original packaging — ideal for collectors of British Commonwealth coinage and royal history.