Since World War II, only 4 changes were made to the original design :
1945 : a dark blue mailbox with yellow edging
1950 : a yellow mailbox with blue edging
1960: no more edging (too hard to maintain), but the Poste logo remains blue
1980 : the corners are rounded
2012: the window for the mail is outlined with a grey frame.n 1950
The whole idea is to give a “mainstream” dimension to an object that used to be reserved to the French administration.
As a matter of fact, if this mailbox is a vintage and iconic object of the the French culture, it is also a well-spread mean of communication, that speaks to everyone everywhere in the world.