Postmarks

What does March 4 look like in postmarks around the world?  Here are some that I've seen, arranged alphabetically by jurisdiction.  Just to make the comparison between each postmark a little easier, this page will show postmarks without stamps.  For this study, I'm interested in what the postmark itself looks like, and showing them on a stamp would be a little distracting.


Canada


Ontario - Brantford - 1947


United States


RPO - Jacksonville & Pensacola - 1957
Leesburg, Florida - 1948
Chicago, Illinois - 1937
Washington, D.C. - 1959