Signedetched and white filled on front panel, bottom right: GENERAL RADIO / SUPER-HETERODYNE / UV 199 TUBES / OCT. 1925
Inscribedetched and white filled on front panel, lower left corner: MARCH 1932
painted on back of dials: TYPE 247 / GENERAL RADIO / (GR logo) / COMPANY / CAP. 440 MMF.
on back of rheostat: TYPE 301 / (GR logo) / 10 OHMS
on top of large transformer: GENERAL RADIO / COMPANY
on to of medium transformer: TYPE 331 / TRANSFORMER / GENERAL RADIO CO. / CAMBRIDGE, MASS.
Historical AttributesCruft