Signedon paper label pasted to underside of base: TOWER SCIENTIFIC / CONE SPEAKER / The entire construction of this / cone speaker is fully protected by / patents pending and applied for. / TOWER MFG. CORP. / 98 BROOKLINE AVENUE * BOSTON, MASS.
FunctionTransduces electrical signals into sound
Related Workshttps://www.radiomuseum.org/r/tower_scientific_version_ii.html (similar, but different base)