Hi, PRGringo !
The ONLY place (so far) that I have seen the Flag that you've described (Betsy Ross Flag with a roman numeral 3 - III - in the center of the star field) is on the ruffin Flag company website.
I have NOT contacted Soren Dresch, the owner of Ruffin Flags, so I don't know for sure, but I believe it was an ill-advised attempt to "approximate" the "2nd American Revolution" flag that came out last year.
In MY opinion, the "US Revolution 2" flag was designed and created for, and marketed, to the supporters of the so-called "Tea Party", and has its own website. The flag's website is set up to do one main thing: sell the "US Revolution 2" flags and related materials. I believe that the flag's design is copywrited so that no one else can "legally" copy it and/or profit from it without permission.
Like I said, I don't know for sure.
Here's a link to the US Revolution 2 flag's website (note that the site's URL is "https" and NOT "http") :
Hope some of this helps!
Eugene, Oregon, USA