File:New Postbox - geograph.org.uk - 190243.jpg - Wikimedia Commons
Have You Noticed Those Weird New Mailboxes? Here's Why They Changed - The New York Times
Pillar box hi-res stock photography and images - Alamy
branding identity through colour... royal mail's iconic red mail box
How the design of the postbox has evolved - Design Week
What happens to post boxes with Queen Elizabeth's ER initials on them? | The US Sun
Any new postboxes in the UK will soon have CR on them. This one is a bit older. : r/mildlyinteresting
Royal Cypher Spotting with Victoria & Etta – Victoria Eggs
Iconic red post boxes: why some people are only realizing what the engravings mean - Hull Live
Pillar box - Wikipedia
D'source Design Process | The India Post Box Re-design | D'Source Digital Online Learning Environment for Design: Courses, Resources, Case Studies, Galleries, Videos
The history of letter boxes - The Postal Museum
US Postal Service's new blue boxes are designed to thwart crime, not for ease of use | KEYE
Norvic Philatelics Blog: Seasonal Postboxes revealed
The Evolution Of The Postbox | Londonist
New parcel postboxes mean you can send a package without visiting the Post Office - Chronicle Live
Isle of Man Post Office Chairman Stu Peters MHK has unveiled the first King Charles III cypher to feature on one of the Island's post boxes. - IoM Post
When Prince Charles becomes King will the post boxes with ERII be destroyed or will the initials just be changed? - Quora
How Charles becoming King will change cash, passports and the judges... here's when it could happen | The US Sun
SEPTEMBER 2022 - WHAT DOES THE NEW KING MEAN FOR POST BOXES? - Letter Box Study Group
Were USPS Mailboxes Removed in Oregon? | Snopes.com
SEPTEMBER 2022 - WHAT DOES THE NEW KING MEAN FOR POST BOXES? - Letter Box Study Group
