Signedstamped on side: RUDOLPH KOENIG / À PARIS
Inscribedstamped below the capsule: UT4
stamped on pipe: 22-2
inscribed on label: 20-9-7
FunctionAcoustic apparatus; an organ pipe, designed to resonate at a specific pitch when pressurized air passes through it
ProvenanceOval label with numbers of the type found in instruments from the Physics Department, Harvard University.