tut,
Both barrels are marked with a crown S which means they were proofed for shot. Each also is marked with a crown W which means both barrels are choked. The proof mark, showing the barrel is choked, does not indicate the amount of constriction. Choke is defined by the % of shot in a certain size circle, and a given barrel may register a different choke with different loads. Experience with many German guns show they tend to be very tightly choked, especially pre war and immediately post war guns. This is because when they were made there were no shot cups, buffers, etc. More recent German guns are marked as to choke by "full", "3/4", "1/2", "1/4", or "Cylinder"; written in German, of course.
Mike
