This tab came Vintage Productions in Los Angeles, and if you know them, they only deal in high cloth Insignia. This tab was removed from a store display jacket that was used in a sew shop in Japan during the Korean War. The workers wore these jackets to show what was available.
A well-known article was written a few years ago in the ASMIC journal about this very jacket from which this Ttabwas removed. This includes packages with tracking numbers or stamped envelopes. Don't worry it will show.