Bell Labs Prototype Field Trial Demitasse set
1957
White House 1980's WE 2500 set

Autovon military phone

About This Phone

For use with the Autovon military network. Note the hard-wired cords.

Wikipedia

The Automatic Voice Network was a worldwide American military telephone system. The system was built starting in 1963, based on the Army's existing Switch Communications Automated Network (SCAN) system.