That's just the old characteristic Columbia mixing pattern. A lot of Columbias, Tracks, AMFs, and more recent Dynos had the same kind of swirl. Given that after the Ebonite buyout, 900 Global set up shop in the same San Antonio factory with a lot of the same equipment, it's not hard to believe that newer 900 Global stuff has the same kind of pattern. One's silver/red, the other is silver/orange.
SH