Greetings. i have a prewar pp serial #946675. i'm trying to identify the organization to which it was issued.it has R.J. stamped on the gripstrap toward the trigger guard.as to the blue wear mainly on the gripstraps and upper left side of the slide itwould appear to have seen more use in the firing mode rather in a holster as a badge of rank. any information is greatly appreciated. it has no importer marks.