The team acquire a personalised Victorian pistol but can they track down the man who originally owned the gun? A customer brings in some military brasses that his father brought back from the Somme. He thinks they came from a horse but Dave has his suspicions about their provenance. And the team travels to Brecon Military fair to find new stock, where they pick up a popular piece of Home Guard memorabilia - a fireman's helmet that survived the Blitz. Can a research trip to the London Fire Brigade museum uncover the story behind the helmet?