| Issuer | United Kingdom |
| Year | 1980 |
| Type | Non-circulating coin |
| Value | 25 Pence |
| Currency | Pound sterling (decimalized, 1971-date) |
| Composition | Silver (.925) |
| Weight | 28.28 g |
| Dimensions | 38.61 mm |
| Thickness | 2.9 mm |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | Obverse: Arnold Machin Reverse: Richard Guyatt |
| In circulation to | |
| Reference(s) | KM#921a, Sp#LL3 |
| Obverse description | Second crowned portrait of HM Queen Elizabeth II right, wearing the Girls of Great Britain and Ireland tiara, legend around. |
| Obverse script | Latin |
| Obverse lettering | ELIZABETH II D·G·REG·F·D· (Translation: Elizabeth the Second by the Grace of God Queen Defender of the Faith) |
| Reverse description | Central portrait of the Queen Mother surrounded by a radiating pattern of symbolic bows and lions, which are an allusion to her family name. |
| Reverse script | Latin |
| Reverse lettering | QUEEN ELIZABETH THE QUEEN MOTHER AUGUST 4th 1980 |
| Edge | Reeded |
| Mint | |
| Mintage | 1980 - Proof - 83 672 |
| Catalog ID | 1488219000 |
| Comments |
