Inverse Duplex Reflex 4DL (4D)

Manufacturer:
David Grimes, Inc.

Model Number/ Identifier:
Model: Inverse Duplex Reflex 4DL (4D)

Year:
1924/25

Location:
Staten Island, NY USA

Description:
TRF Radio Reflex/3 AM Circuits/ MW Receiver/$160/ Storage or Dry Batteries/Requires External  Speakers

Additional Information:
Photo Credits: Radiomuseum.org