If we all accepted that the "M 49" was a "Dispersal Code", for a moment, then one would expect the Poole made example to also have a "Dispersal Code". If we all continue to accept that the markings are all "Dispersal Codes" for a moment longer, is it not a huge coincidence that the numeric part of all of the alleged "Dispersal Codes" match exactly when the No9 bayonet was in production?