Federal 57 58 59 61 110 Tube Radio RF Transformer..NOS

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Federal Telephone & Telegraph Co. Amplifying Transformer, used in early Federal tube radios 1922 through 1923. This one is new old stock, and has never been used, in excellent condition with the original box. All lettering is clear and legible, with a firm box showing some light soiling. This RF Transformer is NO. 29 with a wavelength of 175-300 Meters, which places it square in the middle of the AM standard broascast band. It has been checked with an ohmmeter, with both windings testing good. If you have one of the early Federal 57, DX-58, 59, or 61 tube radios, missing the transformer, this will let you listen to that old impressive radio. Please email me any questions.