Rhiwderin currently has 11 mapped postboxes recorded by The Postbox Hunter. The postboxes in Rhiwderin include 2 recorded royal cyphers. The most common is EIIR, recorded on 3 postboxes, representing 27.3% of the mapped total. The complete recorded cypher list is: EIIR (3) and GR (1). The most commonly recorded postbox type is Lamp, with 6 mapped examples. The data contains 2 different recorded postbox types. Across the available tagging data, 1 design and 1 colour are represented. The most frequently recorded colour is Red, appearing on 4 mapped postboxes. This information is generated from the latest postbox location and tagging data available to The Postbox Hunter.