I completed a photo survey of coal holes covers within the boundaries. I only started notice these case iron objects a few months ago and have been fascinated to see so many different patterns and designs so I decided to document all of them. I checked every Victorian house in every street in the boundaries of the former borough of Stoke Newington (More interesting than it sounds). Found 76 different ones and I estimate about 600 overall. You can download an A2 poster here.