Mailbox is the 2011 common theme for the annual America UPAEP stamp series and Brazil issued a 4-stamp sheet on October 9, 2011. Each stamp depicts one mailbox related to the period when it was utilized. The first three mailboxes to be commissioned in Brazil were inaugurated in Rio de Janeiro City, on August 5, 1845 during the Imperial time. They were made from cast iron, painted dark brown and the front artwork showing the imperial coat of arms painted in polychrome. The Republic mailboxes at the end of the 19th century were also made from iron, with two meters in height, weighing around half a ton and made in Holland.
At the start of the second decade of the 20th century, the mailboxes started to be manufactured in Brazil. The first DCT boxes had a simple design and were square, heavy, green column types and were used throughout Brazil until 1969. They were replaced by current small lightweight boxes, in the form of a truncated pyramid, painted yellow and suspended on painted blue steel rods.