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extension switches

THB6668 telephone exchange SWBD CB 935 desk top unit

THB5450 telephone black Bakelite with extension buttons

THB3739 Telephone American black metal rotary dial Bell System Western Electric with extension button switches

THB3724 Telephone American ITT Office with extension button switches

THB3723 Telephone American with 10 line extension switches

THB3691 Telephone Dictograph bakelite with wooden base

THB3343 telephone Bakelite office / reception phone with Extension switches (German)

THB638 Telephone (receptionist) teak with extension switches

THB636 telephone exchange desk top box with switches Phone system Switch board

THB634 telephone exchange desk top unit