Pauls  L.M. Ericsson HA 150/10
10 line intercom walnut desk telephone
(two button - single wire)  serial #1041194 (March 1912)

Battery-Ringing Inter-Communication Table Telephone for single Lines model  765
Självväljarebordtelefonapparater för enkellinjer med galvanisk signal

Telephone has Brass, Nickel and Copper/Bronze trim on Walnut

Double button HA150 on left  *  single button HA250 on right

single wire HA150 on left  *  double wire HA250 on right  (note double contacts)

single wire HA150 on left  *  double wire HA250 on right (coil moved to top)

Pauls Telephone Collection Pages