The flags were made by Jackson Belknap. There also exists the same Second National flags for the 16th/25th Louisiana Infantry (Western Kentucky University) and the 32nd Alabama Infantry (I forget where this is offhand).
Also, the stars for the 5th Company WA flag are not gone - they were appliqued to the reverse side only and then cut through the blue cross. This was typical Belknap including for the 12 star Mobile Depot flags he made except usually the star was sewn to the obverse side. The stars on the 32nd Alabama are also appliqued to the reverse side.
The canton does look like a flat felled seam to attach it to the white field.