'Rely-a-Bell
BURGLAR ALARM
BIS. 4321'
The word 'THE' is unreadable in
the top left corner. But the brand name is a delight and deserves to be
marketed again. The Rely-a-Bell Burglar & Fire Alarm Co. Ltd. was
based at 54 Wilson Street, Lodon E.C.2 from 1935. The company dates
back to 1904 as part of the ironmongery business of Thomas Gunn,
which developed into an electrical firm.
'BIS.' is one of the old London exchange prefixes for telephone
numbers,
standing for Bishopsgate, which is on the north-east of the City of
London. The Post Office trunk telephone system
was opened to the public on 16 July, 1895. The first Post Office
exchange in London was opened on 1 March, 1902:
'Central Exchange' with a
capacity for 14,000 subscribers. 'City' Exchange was the second
(capacity 18,000) followed by 'Mayfair' to serve the West End,
'Western' for Kensington and 'Victoria' for Westminster in the same
year. Several other Post Office exchanges were also opened in the
London suburbs. New dialling codes, preliminary to the start of
subscriber trunk dialling in London, were introduced in the London
Directory Area on 6 April, 1959. The
three-letter exchange prefixes were
phased out from 1966 and replaced with all-digit phone numbers.