• Manufacturer : Jesse H. Bunnell & Co.
  • Type : SW - 37,  150 ohms
  • Produced : 1930's - New York, U. S. A.
  • Device : 150 ohms telegraph relay with "goose neck" alternating switch
  • Status : does work!
  • Global estimation (1-10) : 9
  • Material : brass, steel, hard rubber, copper ...
  • Specials: it was mostly used in railroads telegraph devices on the begining of 20th
          century and was furnished in communication networks in the U.S. Railways,

          and was built in to telegraph devices by Western Union Telegraph Co.

        - on the name tag is signed : J.H. BUNNELL & Co., INC. NEW YORK, U.S.A.

        - this type (SW-37) was used for long distance communications (up to 75 miles )

  • Note : wanted product of J. H.  Bunnell & Co. !

Back