Signedplate on back: ACME / for amplification / REPRODUCER / SINGLE FREE EDGE CONE / TYPE K-3 / ACME APPARATUS CO. / CAMBRIDGE, MASS. / PATENT APPLIED FOR
Inscribedlabel 1: DPW / N-3
FunctionTransduces electrical signals into sound.
ProvenanceDavid P. Wheatland, Topsfield, MA.
Related Workshttps://www.radiomuseum.org/r/acmeapp_acme_junior_k_3.html