Just for the fun of it, I added to a recent SFS order a strip of 25 of the 5-cent American Toleware Coil "Reprint" that is listed in the current edition of USA Philatelic.
Here's a comparison of the stamp below the original 2002 version. The original printing (top strip) has a noticeably darker background than does the reprint (bottom strip). Also, the reprinted variety contains no backnumbers. Finally, in the reprinted variety there is slightly more space between the bottom of the stamp image and the date:

Here's a close up of the PNC's:
