I noticed some of you like these covers. Here's what I can offer for viewing.
The first image is a pretty World's Fair Cover with the 2 cent (Scott 324) used just 20 days after it was issued.


The next image has the date changed with a blue rubber stamp from 1903, when it was originally schedule to occur, to 1904, when it did occur.

The last image, also with Scott 279B, shows a cover with the original 1903 date left alone.
