Gray Ericofon famous mid century modern telephone from Ericsson

Gray Ericofon or sometimes called cobra famous mid century modern telephone from Ericsson. In good condition some minor signs of wear because of age and a very slight discoloration.

Height 21 CM

If want to try to rewire or make it work one modern phone lines 
A lot of information is on:
http://en.wikipedia.org/wiki/Ericofon

Signed Ericsson on the bottom.

I was not able to test it.