LM Ericsson wall intercom telephone / line selector, Sweden, early 20th century (c. 1900–1915) An original early 20th century wall-mounted intercom telephone manufactured by LM Ericsson, Stockholm. This is not a standard household telephone but a self-selecting internal communication unit (intercom / line selector), designed for use in offices, workshops or small exchanges. The device allows manual selection between multiple internal lines (numbered 1–15). Such intercom units were produced in smaller quantities compared to standard wall telephones and are less commonly encountered on the market. Technical / visual features: Wooden wall-mounted body Multi-line selector (1–15) Original metal bell Two function buttons (marked S / M) Original handset (marked LM Ericsson, Stockholm) Textile-covered cord Early electrical components preserved Condition: Good original condition with age-related wear consistent with use. Patina on metal parts. Minor wear to wood and surface. Untested – sold as a collector’s item.