The explosive was uncovered in the Sülz district of the west German city. "World War II bomb found in Sülz," the official account of the city of Cologne posted on X. "During construction work ...
A facsimile copy of Gibson's logbook featuring autographs including from Gibson's wife and the head of World War II Bomber Command, Arthur 'Bomber' Harris, has a guide price of £300-£500.