Pauls  L.M. Ericsson AC420
magneto desk telephone w/push button cut-out
serial # 741171 (mid 1908)

My AC400

base & side are made of black enamelled steel, and the top-plate of ebonised pear-tree wood.

catalog sketch and my phone

Type AC 420
replacement for AC300

Generator RH4500 ring through line resistance of 25,000 Ohm
  Ringer Resistance: 300 ohm
4-bar magneto

13" x 10.25" x 5.5"
Weight: 11.5 lbs

Press button for short circuiting the induction coil and cutting out the ringer coil.
This telephone has enclosed line terminals, and its base & side are made of black enamelled steel, and the top-plate of ebonised pear-tree wood.
If required and without extra cost, we can supply these types with the case enamelled to imitate walnut, and at an extra cost, we can supply them with two cranks.

Catalog information from  LM Ericsson 6th Edition 1911 courtesy STSF

Pauls Telephone Collection Pages

  

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