doorknob, brass, residential, c. 2024 Manufacturer unknown. Backplate missing. Recovered from a demolished duplex on the corner of Obligation and Habit. Minor oxidation along the rosette. The internal spring mechanism shows signs of repetitive stress—estimated 140,000 rotations over a twenty-year service life. Faint scratches on the strike plate suggest the door was often shouldered open while both hands were full. Donor wishes to remain anonymous. On extended loan from the Department of Thresholds.