50 Pence - Charles III Battle of Britain (Eric Lock)

Eric Lock was the RAF's highest-scoring British-born ace of the Battle of Britain, credited with 26 kills before losing his life in July 1941 — his Spitfire simply failed to return from a sortie over the French coast, no wreckage ever found. Guernsey's particular stake in commemorating the Battle is not sentimental: the island was under German occupation from June 1940, making the RAF's failure to hold aerial superiority a lived reality for its civilian population rather than a distant news event.