SWITCHBOARD CBS N934
Table mounted, cordless, wooden switchboard. Supplied in 1+3, 2+4 and 3+9 models.
Used on CBS exchanges.
Introduced circa 1941.
All the key handles are grey in colour except for the operator keys which are red in colour.
The 3+9 was also available as a 3+7 until 1947 when it was withdrawn. The 3+7 is shown below.
CBS N934 3+7 (9)
Last revised: December 02, 2021