The Trimphone was BT's first luxury phone. It appeared in the
mid 1960s but got buttons (instead of a dial) in 1977.
It was available in three colours, two-tone blue, green and ivory
and was the coolest thing to have at your bedside. They were only
available to rent as the telephone system was still a GPO monopoly
at the time.
The name 'Trim' is apparently an acronym of 'Tone Ringer Illuminated
Model' There was also a leather-clad version called the Deltaphone,
acronym unknown.
