For the letter E - East Coast, New Zealand
2013 - New Zealand - New Zealand Coastlines
According to Wikipedia, East Cape is the easternmost point on the North Island of New Zealand. On the left side of the stamp is the East Cape Lighthouse on Otiki Hill.
The stamp was released on 4 September 2013. It was part of a 5-design miniature set.
For more stamps with letter "E" - visit See It On A Postcard