One of Shiner's works was the trophy for the winner of the King's Vase race at Royal Ascot 1940. The race was cancelled because of wartime conditions, and the trophy was repurposed as the Dunkirk Cup, winning a competition, and commemorating the naval action of the Dunkirk evacuation of late May and early June of that year. It was auctioned in July for the benefit of the Red Cross, being purchased by Almeric Paget, 1st Baron Queenborough.