Skylab Project - A-B Emblem - Alternate

At first pass the patch is identical to the A-B Emblems souvenir 4" patch, however, there are a number of subtle differences. There is stitching in the solar panel riser as well a tighter stitching along the solar panels. The "United States of America" is slightly smaller.

The rest of the stitching remains the same so it is most likely that this is early A-B issue.