I agree with Peter! There was to my own knowledge. Nothing in E.M.E.Rs to the effect of modifiying 1907 Patt bayonets to a shorter type. ONLY rounding the ends to make D.P variants. And indeed, these were done to bayonets that had been condemed due to sharpening & becoming undersize in length generally. Thus extending the bayonets life from what would effectively have become scrap & would have been stripped for parts & the main blade assembly destroyed. My Father who like me was an Armourer & served through time frames a lot earlier than myself. Had one identical to this one shown. (But without the muzzle ring enlargment) He had simply reshaped & reground the tip from a snapped blade. & then CORRECTLY shortened & refitted the scabbard End Tip. (Chape) It looked proffesional & to the unknowing eye, 'Correct'! It was done simply as something to do, to see if something usefull could be done with a broken bayonet. It made a reasonable knife, so im told. & of course, with any squaddie, something that was different that nobody else had on thier belt in the field! It hung on the wall in every Armourers shop he was ever posted to. (Along with countless Weapons that had been dug up on excersises & restored by my Father)I remember seeing it as a Kid. He was & still is, an avid bayonet collector. The end result was, that Bayonet was purchased by the Late Gordon Huges. A well know & respected bayonet collector & Dealer who lived in Brighton. Gordon was informed it was NOT an original Piece as such. But made my Dad a very good offer on it as he didnt really want to sell it! & as we were as a family, fresh out of the Army & Dad was attempting to put a goodly sum together as the deposit on a house in Civvy street. a LOT of things had to go! You wont belive some of the extremely rare guns he had had in storage for over 2o years. Trials .303" for example. But that is another story!..................