Taking this one piece at a time.
Mike, regardless of any other silencer theories, would you agree that the silencer marked as exhibit DB/1 is the same item as that marked as DRB/1?
And would you also agree that the change is simply due to the discovery of a clash of initials between David Bird and David Robert Boutflour?
... Silencers, DB/1 and DRB/1, cannnot possibly be one and the same silencer, because they were found on two separate occasions, and sent to the lab' on two completely different dates (30th August, and 20th September. 1985. We now know, that S.hìela's blood was found in silencer (DB/1) that got sent to the Lab', on 30th August, 1985 - the small flake of blood found in thìs silencer, was analyzed between 11th and 19th September, 1985, producing the blood group activity, A, EAP BA, AK1, and HP2-1, on dates before the Bamber silencer (DRB/1) was even sent to the Lab'. Therefore, silencers, DB/1 and DRB/1, could not possibly have been one and the same silencers? The explanation you refer to, about there being somesort of a mixup with the labelling, where the exhibit reference, SBJ/1 clashed with the initials of DS Jones, and that the next lot of initials, DB/1, clashed with PC David Bird, all seems a bit farfetched, to be hondst, as far as I Know, DS JONES, never took possession of anyother exhibit marked SBJ/1 in connection with this investigation, and PC David BIRD, did not seize any items at all, bearing the mark, DB/1.