Post Office 700 series table telephone (around 1965). At that time the colours were seen as setting a new trend!
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/30661871@N03">Richard Ash</a>
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/30661871@N03/32658411878/">IMG_5624</a>