Not sure that is proper terminology, but I am curious if anyone else has a Parker with these cloth "cases"? Were they available to order with a gun? Have they ever been noted in a PGCA letter? If they were available what period of time were they available. Maybe the Parker Story has something regarding these.
I have a DHE 20 gauge, 1930 manufacture date that had these with it when I bought the gun. The previous owner thought they were original to the gun.