State shield differences in each state

[roadman65]

I would like to add Florida to the list of changing it shields over time.
http://www.flickr.com/photos/54480415@N08/5039217454/in/photostream/
http://www.flickr.com/photos/54480415@N08/5038597723/in/photostream/

Originally FDOT used cutouts on green signs, but over time have changed over to square borders as noted in these two different photos taken around Jacksonville.