Ericsson AC400

Ericsson AC400
Ericsson AC400

An upright box with an antler type cradle and a magneto: this configuration was used by many manufacturers, often with the use of Ericsson designed parts. It is made of sheet metal with a wooden top.  The version pictured here does not have the trumpet shaped speaking type, but the hygienic flat mouth piece that was introduced  after the 1917 Spanish flu.

Ericsson AC400 1911
Ericsson AC400 1911

It appeared for the first time in the Ericsson catalogues in 1911 and it’s electronics were a development of the Ericsson AC 310 and the Ericsson Cookie jar which were in turn developments of the AC110 Skeleton.

The version pictured here has elaborate decals, but there are much simpler versions. Often the logo of a local telephone authority was printed on the side.

This one also has a small label with Koopman & Co Amsterdam written on it. Koopman & Co were one of the first suppliers to the Rijkstelefoondienst, the Dutch national telephone Authority, which was later to become PTT.

A version of this telephone was in the Netherlands known as type B. This version did not have any decoration on its exterior.

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