STERLING TELEPHONE AND ELECTRIC Co. Ltd
STERLING PRIMAX SYSTEM OF AUTOMATIC INTERPHONES
THE NEW 'ERA'
These new patterns take the place of, and are an improvement on our "ERA" Automatic Interphones.
No. U 440
The New "Era" Automatic Interphone Wall Pattern, Comprising:
Woodwork Solid Walnut.
No. U 442
Table Telephone, comprising:
Available in 5, 10, 16, 20 or 30 lines.
Taken from the Sterling Catalogue No. 11 & 12
Last revised: December 27, 2021