25 New Pence - Elizabeth II Silver Jubilee, Sindall pattern

Pattern pieces were struck by the Royal Mint in advance of the 1977 Silver Jubilee crown to test design proposals before final approval. The Sindall pattern — attributed to sculptor Arnold Machin's studio assistant — represents one of several rejected or trial submissions that never advanced to circulation issue. Most surviving examples were retained by the Mint or distributed to officials; very few entered private hands through legitimate channels, which is why they surface almost exclusively at specialist auction rather than through general trade.