If you look at the top pic (my luger) the stamp on the left and the stamp on the right appear to match the marks shown on Klaus' erfurt. The middle marking on the other hand appears different do each of these stamps have a significant meaning? ie. there are three marks does this mean that all 3 put together have a significant meaning? Or does it mean each mark is a separate inspection mark and that the gun passed through three different inspectors each with a different type of stamp? Also does each stamp by itself have a significant meaning?