Boutflour speaks about Basil Cock, complaining about the fingerprint dust, at the time the silencer was found in the gun cupboard at whf - what this means is that the silencer to which he is referring to, could not have been found in the gun cupboard at whf on 10th August 1985, because no fingerprint examination took place at the scene as part of the SC/688/85 investigation, such a fingerprint examination was not undertaken at whf until the investigation changed on 6th September 1985, under SC/786/85...
The date when the silencer that was found in the gun cupboard has been changed from 11th September 1985, and back dated to 10th August 1985, and confirmed by reference to the fingerprint dust which was all over the place at whf, from 6th September 1985, onwards...