In Great King Street, she and joiner Jordan Walters found a 1942 fire extinguisher, D-Day-era newspapers and an empty tin of whole chicken in jelly.
Other finds included stout bottles, cigarette packets, rodent and insect repellents, games cards and local newspapers, offering clues to wartime life and the building's past occupants.
Geddes, 37, plans to study the hand-drawn title deeds and rescued envelopes bearing a possible name, Mrs Latimer, to trace the flat's history and former residents.
What does this accidental time capsule reveal about the daily life of the mysterious 'Mrs. Latimer' during World War II?
Was this a deliberately hidden trove of memories, or simply forgotten trash that now tells a remarkable story of wartime survival?
Beyond history, how do these 1940s items challenge our modern ideas about what is worth preserving from our daily lives?