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Siemens and Halske 25-extension intercom
1920
Siemens & Halske Model 4088 (Railroad)
1910
Siemens and Halske early dial telephone
About This Phone
ZB-SA table-top telephone, c. 1912, manufactured under Strowger patent, black-lacquered metal case with nickel-plated fork, number switch lock present, handset with speaking horn.
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