LGR Blerbs | Testing a 1961 Speakerphone! Model 880 by Automatic Electric @LGRBlerbs | Uploaded June 2024 | Updated October 2024, 1 day ago.
Found this nifty 1960s speaker phone and had to pick it up! This is the Automatic Electric Executive Type 880 speakerphone from the 60s, a rotary telephone with a built-in mic and external speaker for making conference calls. Don Draper would approve.

Here's the technical journal I showed: telephonecollectors.info/index.php/browse/document-repository/catalogs-manuals/automatic-electric/aetj-ae-technical-journal/13243-ae-tech-journal-feb61-p232-new-speakerphone-executive-model-880-tci-ocr/file