Early pillar-box, Eton High Street
Introduction
The photograph on this page of Early pillar-box, Eton High Street by Stefan Czapski as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk
Image: © Stefan Czapski Taken: 14 Jul 2013
It could well be that it was this design that first gave rise to the term 'pillar-box', as the design seems to have been modelled on a Doric column. How many there are still in use, I don't know - but I suspect it's no more than three or four. I believe there is one in Warwick, and perhaps in Malvern. Update: Five more fluted pillar boxes can be found on Geograph. Of those, a pair in Warwick are the closest match to the Eton box, having a vertical letter slot: http://www.geograph.org.uk/photo/257390. There are no less than three in Malvern, similar in style, but with the slot placed horizontally: http://www.geograph.org.uk/photo/100153 The Eton box, by the way, is still in use. The slot might appear to have been blanked off, but is simply protected by a hinged flap - a refinement omitted from most later designs.