Brithdir currently has 10 mapped postboxes recorded by The Postbox Hunter. The postboxes in Brithdir include 3 recorded royal cyphers. The most common is EIIR, recorded on 7 postboxes, representing 70% of the mapped total. The complete recorded cypher list is: EIIR (7), GR (1) and yes (1). The most commonly recorded postbox type is Lamp, with 10 mapped examples. Across the available tagging data, 1 design are represented. This information is generated from the latest postbox location and tagging data available to The Postbox Hunter.