Ericsson DBH 1001 telephone
The Bakelite phone (bakelittelefon) officially known as Ericsson DBH 1001, and later as M33, N1020, and ED 702, was a Swedish line of telephones made from the polymer Bakelite and produced for over thirty years between 1931 and 1962. == History == The Ericsson DBH 1001 of 1931 was a collaborative project between the Elektrisk Bureau in Oslo, Televerket (Sweden) and Lars Magnus Ericsson (1846–1926).
Source: Wikipedia — Ericsson DBH 1001 telephone (CC BY-SA 4.0)