Royal Cyphers on Letter Boxes - The Postal Museum

What is “cypher-spotting”? A renewed interest in Royal Cyphers is making more people stop and take a second look at post boxes.

GVIR Post Box – Edinburgh, Scotland - Atlas Obscura

Trail talk: a forgotten anomaly, the 1930s Airmail pillar boxes

Royal Mail - Wikipedia

Royal Cyphers on Letter Boxes - The Postal Museum

Point of Interest: Post Boxes

Royal Cyphers on Letter Boxes - The Postal Museum

British Pillar Boxes Post Box Icons - Britain All Over Travel Guide

Royal Cyphers on Letter Boxes - The Postal Museum

Tradition and Design: The History of Royal Cyphers - Design Dives

King Charles' royal cypher revealed which will feature on post boxes and passports - Daily Record

New Exhibition at the Postal Museum: The King's Stamp - ABPS