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Telephone Switchboard, 555 PBX (Private Branch Exchange) model, 1955-1969

Telephone Switchboard, 555 PBX (Private Branch Exchange) model, 1955-1969

This switchboard was used in a Kalamazoo-area business in the 1960s. It is a 555 PBX model, which was first introduced in 1948. A switchboard like this was used to connect a group of telephones together manually to one another. A PBX would mainly be used internally at a business or company. This model included a sloping key shelf that could be rotated for answering and talking instead of the older method of pushing and pulling to operate.

Object #2011.42.1

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  1. Introduction
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  2. Replica of King Tutankhamen’s Throne, pre-1980s
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  3. Horse Model, c. 1870s
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  4. Replica Radio-Controlled Model Airplane “Big Guff,” 1937
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  5. Dutch Merchantman Model, Handmade, c. 1949
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  6. Carrom Board, The Carrom Company, manufactured 1914-1939
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  7. Flexible Flyer Sled, S.L. Allen and Company, Inc.
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  8. Pieter Van Peenen’s Trunk, c. 1863
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  9. Wheelchair, circa 1940s-1950s
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  10. Child’s Ladder-Back Chair, 1840-1860
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  11. Child’s Rocking Chair, mid-19th century
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  12. Baby’s Highchair, 1830-1839
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  13. Bassinet, Vermeulen Furniture Company, 1930
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  14. Rocking Horse, Pony Boy Manufacturing Company, 1947-1948
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  15. Edgars Krasts’ Trunk, c. 1951
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  16. Work Table, date unknown
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  17. Bicycle, “Mini Miss,” Stelber Bicycle Corporation, c. late 1960s
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  18. Electric Stove, Kalamazoo Stove & Furnace Company, 1948-1950
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  19. Electro Hygiene Vacuum Cleaner, c. 1940
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  20. Pump Organ, Star Organ, c. 1870s
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  21. Electric Phonograph Company, 1916-1918
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  22. Regina Music Box, c. 1895
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  23. Console Television, Model 2U172L Run 2, Magnavox, c. 1960
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  24. Radio, Zenith Radio Company, 1940-1941
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  25. Bass Drum, Barbour Hall Military Academy Band, c. 1950s-1979
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  26. Chickering Piano, 1864
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  27. Florentine Table, c. 1875
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  28. Panama Pacific Exposition of 1915
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  29. Carved Chair, purchased 1915
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  30. Table, Hinoki Wood, 1915
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  31. Settee, c. 1870
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  32. Writing Desk and Chair, c. 1880
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  33. Singer Sewing Machine, 1927
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  34. Underwood Standard Bookkeeping Machine, post-1923
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  35. Permanent Wave Machine, c. 1937
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  36. Hoekstra’s Hardware Store Sign, 1940s-2017
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  37. Test 'Ur Own' Radio and TV Tube Tester, c. Late 1950s - Early 1960s
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  38. Telephone Switchboard, 555 PBX (Private Branch Exchange) model, 1955-1969