Puhelinteollisuus wall phone
This is Finnish made telephone, from OY Puhelinteollisuus  (Telephonefactory) in Helsinki.

Wiring inside the casing (no date or type unfortunately), casing made from oak birch plywood.

The hole apparatus comes out from casing by releasing one screw.

Has now modified Ericsson crank, should have Siemens one.

Phone may be done during 1950's.
O/Y Puhelinteollisuus  was founded 20.09.1940 and name changed to Standard Electric Puhelinteollisuus OY 19.04.1962. Name changed again 19.06.1991 to Algatel Suomi OY and closed 31.05.2007.